./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/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_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/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_2a9ca35c-0b64-4904-ab36-cfb865604819/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 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:51,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:51,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:51,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:51,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:51,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:51,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:51,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:51,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:51,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:51,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:51,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:51,886 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:51,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:51,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:51,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:51,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:51,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:51,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:51,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:51,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:51,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:51,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:51,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:51,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:51,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:51,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:51,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:51,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:51,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:51,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:51,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:51,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:51,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:51,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:51,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:51,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:51,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:51,903 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:51,903 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_2a9ca35c-0b64-4904-ab36-cfb865604819/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 [2023-11-19 07:48:52,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:52,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:52,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:52,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:52,240 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:52,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2023-11-19 07:48:55,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:55,739 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:55,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2023-11-19 07:48:55,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/data/6f963bc24/5fff2c07269e4eae8a3de1fa1f8c903e/FLAG5e3b57a17 [2023-11-19 07:48:55,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/data/6f963bc24/5fff2c07269e4eae8a3de1fa1f8c903e [2023-11-19 07:48:55,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:55,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:55,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:55,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:55,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:55,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:55" (1/1) ... [2023-11-19 07:48:55,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c5277e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:55, skipping insertion in model container [2023-11-19 07:48:55,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:55" (1/1) ... [2023-11-19 07:48:55,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:56,119 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_2a9ca35c-0b64-4904-ab36-cfb865604819/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2023-11-19 07:48:56,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:56,136 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:56,204 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_2a9ca35c-0b64-4904-ab36-cfb865604819/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2023-11-19 07:48:56,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:56,224 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:56,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56 WrapperNode [2023-11-19 07:48:56,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:56,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:56,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:56,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:56,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,309 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 451 [2023-11-19 07:48:56,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:56,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:56,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:56,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:56,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:56,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:56,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:56,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:56,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:56,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ca35c-0b64-4904-ab36-cfb865604819/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:56,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:56,577 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:56,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:57,222 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:57,235 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:57,238 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:48:57,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:57 BoogieIcfgContainer [2023-11-19 07:48:57,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:57,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:57,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:57,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:57,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:55" (1/3) ... [2023-11-19 07:48:57,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73719d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:57, skipping insertion in model container [2023-11-19 07:48:57,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (2/3) ... [2023-11-19 07:48:57,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73719d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:57, skipping insertion in model container [2023-11-19 07:48:57,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:57" (3/3) ... [2023-11-19 07:48:57,260 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c [2023-11-19 07:48:57,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:57,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:48:57,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:57,340 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;@36d810d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:57,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:48:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:48:57,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:57,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:57,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:57,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:57,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1728308088, now seen corresponding path program 1 times [2023-11-19 07:48:57,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:57,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722743198] [2023-11-19 07:48:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:57,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:57,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722743198] [2023-11-19 07:48:57,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722743198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:57,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:57,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082766867] [2023-11-19 07:48:57,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:57,834 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:57,875 INFO L93 Difference]: Finished difference Result 173 states and 297 transitions. [2023-11-19 07:48:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-19 07:48:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:57,887 INFO L225 Difference]: With dead ends: 173 [2023-11-19 07:48:57,887 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:48:57,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:57,893 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:57,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:48:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-19 07:48:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 111 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 196 transitions. [2023-11-19 07:48:57,936 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 196 transitions. Word has length 27 [2023-11-19 07:48:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:57,936 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 196 transitions. [2023-11-19 07:48:57,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 196 transitions. [2023-11-19 07:48:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:48:57,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:57,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:57,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:57,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:57,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1947162806, now seen corresponding path program 1 times [2023-11-19 07:48:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230031649] [2023-11-19 07:48:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:58,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230031649] [2023-11-19 07:48:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230031649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:58,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412921461] [2023-11-19 07:48:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:58,291 INFO L87 Difference]: Start difference. First operand 112 states and 196 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:58,424 INFO L93 Difference]: Finished difference Result 172 states and 290 transitions. [2023-11-19 07:48:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-19 07:48:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:58,427 INFO L225 Difference]: With dead ends: 172 [2023-11-19 07:48:58,427 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:48:58,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:58,430 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:58,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 721 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:48:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-19 07:48:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 111 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 146 transitions. [2023-11-19 07:48:58,442 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 146 transitions. Word has length 27 [2023-11-19 07:48:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:58,442 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 146 transitions. [2023-11-19 07:48:58,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 146 transitions. [2023-11-19 07:48:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:48:58,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:58,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:58,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:58,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:58,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1738990554, now seen corresponding path program 1 times [2023-11-19 07:48:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981838443] [2023-11-19 07:48:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:58,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981838443] [2023-11-19 07:48:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981838443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:58,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:48:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149186845] [2023-11-19 07:48:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:58,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:58,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:58,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:58,842 INFO L87 Difference]: Start difference. First operand 112 states and 146 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:59,439 INFO L93 Difference]: Finished difference Result 896 states and 1406 transitions. [2023-11-19 07:48:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:48:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-19 07:48:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:59,452 INFO L225 Difference]: With dead ends: 896 [2023-11-19 07:48:59,453 INFO L226 Difference]: Without dead ends: 840 [2023-11-19 07:48:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:48:59,464 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1616 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:59,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 2672 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:48:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-11-19 07:48:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 166. [2023-11-19 07:48:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.412121212121212) internal successors, (233), 165 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 233 transitions. [2023-11-19 07:48:59,516 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 233 transitions. Word has length 76 [2023-11-19 07:48:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 233 transitions. [2023-11-19 07:48:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 233 transitions. [2023-11-19 07:48:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:48:59,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:59,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:59,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:59,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:59,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -988047094, now seen corresponding path program 1 times [2023-11-19 07:48:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078912939] [2023-11-19 07:48:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078912939] [2023-11-19 07:48:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078912939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:59,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:59,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731353367] [2023-11-19 07:48:59,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:59,653 INFO L87 Difference]: Start difference. First operand 166 states and 233 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:59,682 INFO L93 Difference]: Finished difference Result 375 states and 568 transitions. [2023-11-19 07:48:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:59,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-19 07:48:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:59,685 INFO L225 Difference]: With dead ends: 375 [2023-11-19 07:48:59,685 INFO L226 Difference]: Without dead ends: 265 [2023-11-19 07:48:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:59,688 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 61 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:59,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-19 07:48:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2023-11-19 07:48:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4730769230769232) internal successors, (383), 260 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2023-11-19 07:48:59,703 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 78 [2023-11-19 07:48:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2023-11-19 07:48:59,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2023-11-19 07:48:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:48:59,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:59,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:59,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:59,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash -921553582, now seen corresponding path program 1 times [2023-11-19 07:48:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127315743] [2023-11-19 07:48:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:00,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127315743] [2023-11-19 07:49:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127315743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:00,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:00,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:00,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62478433] [2023-11-19 07:49:00,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:00,273 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:00,757 INFO L93 Difference]: Finished difference Result 468 states and 711 transitions. [2023-11-19 07:49:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-19 07:49:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:00,760 INFO L225 Difference]: With dead ends: 468 [2023-11-19 07:49:00,760 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 07:49:00,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:49:00,762 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 438 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:00,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 662 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 07:49:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2023-11-19 07:49:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4653846153846153) internal successors, (381), 260 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2023-11-19 07:49:00,776 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 78 [2023-11-19 07:49:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:00,776 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2023-11-19 07:49:00,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2023-11-19 07:49:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:49:00,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:00,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:00,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:00,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:00,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1081887121, now seen corresponding path program 1 times [2023-11-19 07:49:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040572372] [2023-11-19 07:49:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:01,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:01,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040572372] [2023-11-19 07:49:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040572372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:01,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:49:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89267988] [2023-11-19 07:49:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:01,127 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:01,234 INFO L93 Difference]: Finished difference Result 433 states and 657 transitions. [2023-11-19 07:49:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-19 07:49:01,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:01,238 INFO L225 Difference]: With dead ends: 433 [2023-11-19 07:49:01,238 INFO L226 Difference]: Without dead ends: 431 [2023-11-19 07:49:01,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:49:01,240 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 178 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:01,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1244 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-19 07:49:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 267. [2023-11-19 07:49:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4511278195488722) internal successors, (386), 266 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2023-11-19 07:49:01,253 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 79 [2023-11-19 07:49:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:01,254 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2023-11-19 07:49:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2023-11-19 07:49:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:01,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:01,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:01,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:01,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -610705390, now seen corresponding path program 1 times [2023-11-19 07:49:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136442870] [2023-11-19 07:49:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:01,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136442870] [2023-11-19 07:49:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136442870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:01,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:01,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73745722] [2023-11-19 07:49:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,336 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:01,359 INFO L93 Difference]: Finished difference Result 673 states and 1018 transitions. [2023-11-19 07:49:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:01,363 INFO L225 Difference]: With dead ends: 673 [2023-11-19 07:49:01,363 INFO L226 Difference]: Without dead ends: 462 [2023-11-19 07:49:01,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,364 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 78 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:01,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-19 07:49:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2023-11-19 07:49:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.4880174291938997) internal successors, (683), 459 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 683 transitions. [2023-11-19 07:49:01,384 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 683 transitions. Word has length 80 [2023-11-19 07:49:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:01,384 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 683 transitions. [2023-11-19 07:49:01,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 683 transitions. [2023-11-19 07:49:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:01,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:01,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:01,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:01,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:01,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:01,387 INFO L85 PathProgramCache]: Analyzing trace with hash -183934446, now seen corresponding path program 1 times [2023-11-19 07:49:01,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:01,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807640181] [2023-11-19 07:49:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:01,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807640181] [2023-11-19 07:49:01,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807640181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:01,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:01,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:01,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728180033] [2023-11-19 07:49:01,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:01,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,466 INFO L87 Difference]: Start difference. First operand 460 states and 683 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:01,506 INFO L93 Difference]: Finished difference Result 1236 states and 1881 transitions. [2023-11-19 07:49:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:01,512 INFO L225 Difference]: With dead ends: 1236 [2023-11-19 07:49:01,512 INFO L226 Difference]: Without dead ends: 832 [2023-11-19 07:49:01,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,514 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 74 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:01,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 304 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-19 07:49:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 830. [2023-11-19 07:49:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.5018094089264173) internal successors, (1245), 829 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1245 transitions. [2023-11-19 07:49:01,551 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1245 transitions. Word has length 80 [2023-11-19 07:49:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1245 transitions. [2023-11-19 07:49:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1245 transitions. [2023-11-19 07:49:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:01,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:01,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:01,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:49:01,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:01,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1054327570, now seen corresponding path program 1 times [2023-11-19 07:49:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819598483] [2023-11-19 07:49:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819598483] [2023-11-19 07:49:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819598483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719609671] [2023-11-19 07:49:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,644 INFO L87 Difference]: Start difference. First operand 830 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:01,701 INFO L93 Difference]: Finished difference Result 2314 states and 3511 transitions. [2023-11-19 07:49:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:01,711 INFO L225 Difference]: With dead ends: 2314 [2023-11-19 07:49:01,711 INFO L226 Difference]: Without dead ends: 1540 [2023-11-19 07:49:01,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,714 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:01,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-11-19 07:49:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1538. [2023-11-19 07:49:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.4996746909564085) internal successors, (2305), 1537 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2305 transitions. [2023-11-19 07:49:01,785 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2305 transitions. Word has length 80 [2023-11-19 07:49:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:01,785 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 2305 transitions. [2023-11-19 07:49:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2305 transitions. [2023-11-19 07:49:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:01,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:01,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:49:01,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:01,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash 619791634, now seen corresponding path program 1 times [2023-11-19 07:49:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611441478] [2023-11-19 07:49:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:01,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611441478] [2023-11-19 07:49:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611441478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:01,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561216079] [2023-11-19 07:49:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,868 INFO L87 Difference]: Start difference. First operand 1538 states and 2305 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:01,967 INFO L93 Difference]: Finished difference Result 4374 states and 6579 transitions. [2023-11-19 07:49:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:01,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:01,984 INFO L225 Difference]: With dead ends: 4374 [2023-11-19 07:49:01,984 INFO L226 Difference]: Without dead ends: 2892 [2023-11-19 07:49:01,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:01,987 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 68 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:01,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2023-11-19 07:49:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2890. [2023-11-19 07:49:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2889 states have (on average 1.4873658705434407) internal successors, (4297), 2889 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 4297 transitions. [2023-11-19 07:49:02,144 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 4297 transitions. Word has length 80 [2023-11-19 07:49:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:02,145 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 4297 transitions. [2023-11-19 07:49:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 4297 transitions. [2023-11-19 07:49:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:02,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:02,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:49:02,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:02,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1161141230, now seen corresponding path program 1 times [2023-11-19 07:49:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:02,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017898856] [2023-11-19 07:49:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:02,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017898856] [2023-11-19 07:49:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017898856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:02,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266930048] [2023-11-19 07:49:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:02,225 INFO L87 Difference]: Start difference. First operand 2890 states and 4297 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:02,413 INFO L93 Difference]: Finished difference Result 8302 states and 12331 transitions. [2023-11-19 07:49:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:02,445 INFO L225 Difference]: With dead ends: 8302 [2023-11-19 07:49:02,445 INFO L226 Difference]: Without dead ends: 5468 [2023-11-19 07:49:02,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:02,453 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 70 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5468 states. [2023-11-19 07:49:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5468 to 5466. [2023-11-19 07:49:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 5465 states have (on average 1.4684354986276305) internal successors, (8025), 5465 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 8025 transitions. [2023-11-19 07:49:02,789 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 8025 transitions. Word has length 80 [2023-11-19 07:49:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 5466 states and 8025 transitions. [2023-11-19 07:49:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 8025 transitions. [2023-11-19 07:49:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:49:02,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:02,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:49:02,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:02,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -447790830, now seen corresponding path program 1 times [2023-11-19 07:49:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114132046] [2023-11-19 07:49:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114132046] [2023-11-19 07:49:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114132046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:02,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531077793] [2023-11-19 07:49:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:02,873 INFO L87 Difference]: Start difference. First operand 5466 states and 8025 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:03,266 INFO L93 Difference]: Finished difference Result 15774 states and 23067 transitions. [2023-11-19 07:49:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 07:49:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:03,325 INFO L225 Difference]: With dead ends: 15774 [2023-11-19 07:49:03,325 INFO L226 Difference]: Without dead ends: 10364 [2023-11-19 07:49:03,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:03,334 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:03,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 310 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2023-11-19 07:49:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 10362. [2023-11-19 07:49:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10362 states, 10361 states have (on average 1.444744715761027) internal successors, (14969), 10361 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10362 states to 10362 states and 14969 transitions. [2023-11-19 07:49:03,850 INFO L78 Accepts]: Start accepts. Automaton has 10362 states and 14969 transitions. Word has length 80 [2023-11-19 07:49:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:03,851 INFO L495 AbstractCegarLoop]: Abstraction has 10362 states and 14969 transitions. [2023-11-19 07:49:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 10362 states and 14969 transitions. [2023-11-19 07:49:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 07:49:03,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:03,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:03,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:49:03,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:03,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1597757267, now seen corresponding path program 1 times [2023-11-19 07:49:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353935122] [2023-11-19 07:49:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:03,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353935122] [2023-11-19 07:49:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353935122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:03,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253017176] [2023-11-19 07:49:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:03,929 INFO L87 Difference]: Start difference. First operand 10362 states and 14969 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:04,468 INFO L93 Difference]: Finished difference Result 21121 states and 30719 transitions. [2023-11-19 07:49:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-19 07:49:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:04,528 INFO L225 Difference]: With dead ends: 21121 [2023-11-19 07:49:04,528 INFO L226 Difference]: Without dead ends: 15358 [2023-11-19 07:49:04,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:04,539 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:04,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2023-11-19 07:49:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 15356. [2023-11-19 07:49:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15355 states have (on average 1.4376424617388472) internal successors, (22075), 15355 states have internal predecessors, (22075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 22075 transitions. [2023-11-19 07:49:05,276 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 22075 transitions. Word has length 82 [2023-11-19 07:49:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:05,276 INFO L495 AbstractCegarLoop]: Abstraction has 15356 states and 22075 transitions. [2023-11-19 07:49:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 22075 transitions. [2023-11-19 07:49:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:05,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:05,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:05,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:49:05,283 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:05,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash -314401999, now seen corresponding path program 1 times [2023-11-19 07:49:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592681956] [2023-11-19 07:49:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:05,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:49:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592681956] [2023-11-19 07:49:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592681956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:05,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378937441] [2023-11-19 07:49:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:05,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:05,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:05,721 INFO L87 Difference]: Start difference. First operand 15356 states and 22075 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 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 07:49:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:09,200 INFO L93 Difference]: Finished difference Result 125580 states and 180547 transitions. [2023-11-19 07:49:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 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 103 [2023-11-19 07:49:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:09,507 INFO L225 Difference]: With dead ends: 125580 [2023-11-19 07:49:09,507 INFO L226 Difference]: Without dead ends: 110282 [2023-11-19 07:49:09,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:09,557 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1338 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:09,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1437 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110282 states. [2023-11-19 07:49:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110282 to 30652. [2023-11-19 07:49:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30652 states, 30651 states have (on average 1.432220808456494) internal successors, (43899), 30651 states have internal predecessors, (43899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30652 states to 30652 states and 43899 transitions. [2023-11-19 07:49:11,973 INFO L78 Accepts]: Start accepts. Automaton has 30652 states and 43899 transitions. Word has length 103 [2023-11-19 07:49:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:11,973 INFO L495 AbstractCegarLoop]: Abstraction has 30652 states and 43899 transitions. [2023-11-19 07:49:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 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 07:49:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 30652 states and 43899 transitions. [2023-11-19 07:49:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:11,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:11,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:49:11,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:11,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 112368945, now seen corresponding path program 1 times [2023-11-19 07:49:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730829214] [2023-11-19 07:49:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:49:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730829214] [2023-11-19 07:49:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730829214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:12,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:12,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489876021] [2023-11-19 07:49:12,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:12,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:12,297 INFO L87 Difference]: Start difference. First operand 30652 states and 43899 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:15,682 INFO L93 Difference]: Finished difference Result 140876 states and 202371 transitions. [2023-11-19 07:49:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 103 [2023-11-19 07:49:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:16,133 INFO L225 Difference]: With dead ends: 140876 [2023-11-19 07:49:16,133 INFO L226 Difference]: Without dead ends: 125578 [2023-11-19 07:49:16,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:16,191 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1386 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:16,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1393 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125578 states. [2023-11-19 07:49:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125578 to 53628. [2023-11-19 07:49:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53628 states, 53627 states have (on average 1.4260540399425663) internal successors, (76475), 53627 states have internal predecessors, (76475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53628 states to 53628 states and 76475 transitions. [2023-11-19 07:49:19,256 INFO L78 Accepts]: Start accepts. Automaton has 53628 states and 76475 transitions. Word has length 103 [2023-11-19 07:49:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:19,257 INFO L495 AbstractCegarLoop]: Abstraction has 53628 states and 76475 transitions. [2023-11-19 07:49:19,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53628 states and 76475 transitions. [2023-11-19 07:49:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:19,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:19,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:49:19,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1350630961, now seen corresponding path program 1 times [2023-11-19 07:49:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121485326] [2023-11-19 07:49:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:49:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121485326] [2023-11-19 07:49:19,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121485326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:19,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:19,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013845210] [2023-11-19 07:49:19,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:19,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:19,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:19,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:19,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:19,674 INFO L87 Difference]: Start difference. First operand 53628 states and 76475 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:23,728 INFO L93 Difference]: Finished difference Result 156172 states and 224195 transitions. [2023-11-19 07:49:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:23,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 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 103 [2023-11-19 07:49:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:24,028 INFO L225 Difference]: With dead ends: 156172 [2023-11-19 07:49:24,029 INFO L226 Difference]: Without dead ends: 140874 [2023-11-19 07:49:24,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:24,061 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1548 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:24,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1306 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140874 states. [2023-11-19 07:49:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140874 to 68924. [2023-11-19 07:49:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68924 states, 68923 states have (on average 1.4262147614004033) internal successors, (98299), 68923 states have internal predecessors, (98299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68924 states to 68924 states and 98299 transitions. [2023-11-19 07:49:27,223 INFO L78 Accepts]: Start accepts. Automaton has 68924 states and 98299 transitions. Word has length 103 [2023-11-19 07:49:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:27,224 INFO L495 AbstractCegarLoop]: Abstraction has 68924 states and 98299 transitions. [2023-11-19 07:49:27,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 68924 states and 98299 transitions. [2023-11-19 07:49:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:27,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:27,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:27,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:49:27,243 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:27,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash 916095025, now seen corresponding path program 1 times [2023-11-19 07:49:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373612211] [2023-11-19 07:49:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:49:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:27,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373612211] [2023-11-19 07:49:27,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373612211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:27,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:27,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:27,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686171737] [2023-11-19 07:49:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:27,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:27,838 INFO L87 Difference]: Start difference. First operand 68924 states and 98299 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:32,276 INFO L93 Difference]: Finished difference Result 171468 states and 246019 transitions. [2023-11-19 07:49:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 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 103 [2023-11-19 07:49:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:32,503 INFO L225 Difference]: With dead ends: 171468 [2023-11-19 07:49:32,503 INFO L226 Difference]: Without dead ends: 156170 [2023-11-19 07:49:32,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:32,533 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1439 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:32,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1378 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156170 states. [2023-11-19 07:49:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156170 to 84220. [2023-11-19 07:49:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84220 states, 84219 states have (on average 1.4263171018416272) internal successors, (120123), 84219 states have internal predecessors, (120123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84220 states to 84220 states and 120123 transitions. [2023-11-19 07:49:36,066 INFO L78 Accepts]: Start accepts. Automaton has 84220 states and 120123 transitions. Word has length 103 [2023-11-19 07:49:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:36,067 INFO L495 AbstractCegarLoop]: Abstraction has 84220 states and 120123 transitions. [2023-11-19 07:49:36,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 84220 states and 120123 transitions. [2023-11-19 07:49:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:36,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:36,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:36,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:49:36,076 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:36,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash -864837839, now seen corresponding path program 1 times [2023-11-19 07:49:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949734501] [2023-11-19 07:49:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:49:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:36,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949734501] [2023-11-19 07:49:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949734501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:36,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:36,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:36,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101500478] [2023-11-19 07:49:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:36,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:36,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:36,395 INFO L87 Difference]: Start difference. First operand 84220 states and 120123 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:41,725 INFO L93 Difference]: Finished difference Result 186764 states and 267843 transitions. [2023-11-19 07:49:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:49:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 103 [2023-11-19 07:49:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,042 INFO L225 Difference]: With dead ends: 186764 [2023-11-19 07:49:42,042 INFO L226 Difference]: Without dead ends: 171466 [2023-11-19 07:49:42,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:42,075 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1276 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1479 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171466 states.