./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/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_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/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 64bit --witnessprinter.graph.data.programhash b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:08,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:08,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:50:08,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:08,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:08,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:08,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:08,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:08,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:08,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:08,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:08,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:08,289 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:08,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:08,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:08,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:08,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:08,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:08,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:08,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:08,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:08,300 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:08,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:08,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:08,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:08,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:08,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:08,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:08,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:08,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:08,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:08,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:08,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:08,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:08,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:08,308 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:08,308 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_dbad8216-204e-4a6e-bd1f-e362a20643af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 [2023-11-19 07:50:08,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:08,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:08,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:08,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:08,617 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:08,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2023-11-19 07:50:11,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:12,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:12,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2023-11-19 07:50:12,029 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/data/0a4cc727a/ba3dd39afd4449b5850b069303416f6d/FLAG88c92bcc2 [2023-11-19 07:50:12,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/data/0a4cc727a/ba3dd39afd4449b5850b069303416f6d [2023-11-19 07:50:12,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:12,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:12,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:12,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:12,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:12,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e067746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12, skipping insertion in model container [2023-11-19 07:50:12,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:12,328 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_dbad8216-204e-4a6e-bd1f-e362a20643af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2023-11-19 07:50:12,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:12,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:12,443 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_dbad8216-204e-4a6e-bd1f-e362a20643af/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2023-11-19 07:50:12,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:12,494 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:12,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12 WrapperNode [2023-11-19 07:50:12,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:12,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:12,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:12,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:12,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,581 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 354 [2023-11-19 07:50:12,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:12,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:12,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:12,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:12,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:12,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:12,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:12,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:12,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (1/1) ... [2023-11-19 07:50:12,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:12,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:12,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:12,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:12,920 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:12,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:13,554 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:13,562 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:13,564 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:13,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:13 BoogieIcfgContainer [2023-11-19 07:50:13,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:13,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:13,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:13,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:13,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:12" (1/3) ... [2023-11-19 07:50:13,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507144e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:13, skipping insertion in model container [2023-11-19 07:50:13,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:12" (2/3) ... [2023-11-19 07:50:13,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507144e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:13, skipping insertion in model container [2023-11-19 07:50:13,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:13" (3/3) ... [2023-11-19 07:50:13,582 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2023-11-19 07:50:13,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:13,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:13,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:13,680 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;@4ae7b78d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:13,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.625) internal successors, (78), 49 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 07:50:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:50:13,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:13,698 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] [2023-11-19 07:50:13,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:13,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1826215643, now seen corresponding path program 1 times [2023-11-19 07:50:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282685766] [2023-11-19 07:50:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:14,462 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 07:50:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282685766] [2023-11-19 07:50:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282685766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:14,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267230132] [2023-11-19 07:50:14,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:14,518 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.625) internal successors, (78), 49 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) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 07:50:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:14,606 INFO L93 Difference]: Finished difference Result 81 states and 129 transitions. [2023-11-19 07:50:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-19 07:50:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:14,617 INFO L225 Difference]: With dead ends: 81 [2023-11-19 07:50:14,617 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 07:50:14,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:14,623 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:14,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 204 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 07:50:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-19 07:50:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 0 states have call successors, (0), 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 07:50:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 74 transitions. [2023-11-19 07:50:14,670 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 74 transitions. Word has length 25 [2023-11-19 07:50:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:14,670 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 74 transitions. [2023-11-19 07:50:14,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 07:50:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 74 transitions. [2023-11-19 07:50:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:50:14,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:14,673 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] [2023-11-19 07:50:14,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:14,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:14,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash -776325435, now seen corresponding path program 1 times [2023-11-19 07:50:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795422245] [2023-11-19 07:50:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:14,941 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 07:50:14,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:14,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795422245] [2023-11-19 07:50:14,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795422245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:14,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:14,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:14,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234241271] [2023-11-19 07:50:14,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:14,947 INFO L87 Difference]: Start difference. First operand 48 states and 74 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 07:50:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,000 INFO L93 Difference]: Finished difference Result 82 states and 125 transitions. [2023-11-19 07:50:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-11-19 07:50:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,005 INFO L225 Difference]: With dead ends: 82 [2023-11-19 07:50:15,006 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:50:15,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:15,010 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 201 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:50:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-19 07:50:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 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 07:50:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2023-11-19 07:50:15,028 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 26 [2023-11-19 07:50:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,029 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2023-11-19 07:50:15,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 07:50:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2023-11-19 07:50:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:15,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,032 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 07:50:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:50:15,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:15,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1491495485, now seen corresponding path program 1 times [2023-11-19 07:50:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043774459] [2023-11-19 07:50:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,484 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 07:50:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043774459] [2023-11-19 07:50:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043774459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042030076] [2023-11-19 07:50:15,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:15,490 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 07:50:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,556 INFO L93 Difference]: Finished difference Result 90 states and 136 transitions. [2023-11-19 07:50:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 07:50:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,560 INFO L225 Difference]: With dead ends: 90 [2023-11-19 07:50:15,560 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:50:15,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:15,568 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 85 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:50:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2023-11-19 07:50:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 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 07:50:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 75 transitions. [2023-11-19 07:50:15,588 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 75 transitions. Word has length 27 [2023-11-19 07:50:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,590 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 75 transitions. [2023-11-19 07:50:15,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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 07:50:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 75 transitions. [2023-11-19 07:50:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:15,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,594 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] [2023-11-19 07:50:15,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:50:15,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:15,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash 589839211, now seen corresponding path program 1 times [2023-11-19 07:50:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74657334] [2023-11-19 07:50:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,074 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 07:50:16,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74657334] [2023-11-19 07:50:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74657334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:50:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505997] [2023-11-19 07:50:16,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:16,079 INFO L87 Difference]: Start difference. First operand 50 states and 75 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:16,387 INFO L93 Difference]: Finished difference Result 158 states and 232 transitions. [2023-11-19 07:50:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:50:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:50:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:16,389 INFO L225 Difference]: With dead ends: 158 [2023-11-19 07:50:16,389 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 07:50:16,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:50:16,391 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 315 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:16,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 423 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 07:50:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 58. [2023-11-19 07:50:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 57 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 86 transitions. [2023-11-19 07:50:16,399 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 86 transitions. Word has length 28 [2023-11-19 07:50:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:16,400 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 86 transitions. [2023-11-19 07:50:16,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions. [2023-11-19 07:50:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:16,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:16,401 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] [2023-11-19 07:50:16,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:50:16,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 196812201, now seen corresponding path program 1 times [2023-11-19 07:50:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838729104] [2023-11-19 07:50:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,973 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 07:50:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838729104] [2023-11-19 07:50:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838729104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:50:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196301843] [2023-11-19 07:50:16,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:16,976 INFO L87 Difference]: Start difference. First operand 58 states and 86 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,358 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2023-11-19 07:50:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:50:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,360 INFO L225 Difference]: With dead ends: 141 [2023-11-19 07:50:17,360 INFO L226 Difference]: Without dead ends: 100 [2023-11-19 07:50:17,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:50:17,362 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 232 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 391 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-19 07:50:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 61. [2023-11-19 07:50:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.5) internal successors, (90), 60 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 07:50:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2023-11-19 07:50:17,374 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 90 transitions. Word has length 28 [2023-11-19 07:50:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,374 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 90 transitions. [2023-11-19 07:50:17,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 90 transitions. [2023-11-19 07:50:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:17,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,376 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] [2023-11-19 07:50:17,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:50:17,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:17,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1971819563, now seen corresponding path program 1 times [2023-11-19 07:50:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584995515] [2023-11-19 07:50:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,664 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 07:50:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584995515] [2023-11-19 07:50:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584995515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80105482] [2023-11-19 07:50:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:17,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:17,667 INFO L87 Difference]: Start difference. First operand 61 states and 90 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,725 INFO L93 Difference]: Finished difference Result 150 states and 216 transitions. [2023-11-19 07:50:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:17,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:50:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,727 INFO L225 Difference]: With dead ends: 150 [2023-11-19 07:50:17,727 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 07:50:17,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:17,728 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 122 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 225 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 07:50:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2023-11-19 07:50:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 66 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 07:50:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-11-19 07:50:17,735 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 28 [2023-11-19 07:50:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,736 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-11-19 07:50:17,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 07:50:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-11-19 07:50:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:50:17,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,738 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] [2023-11-19 07:50:17,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:50:17,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:17,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -297817769, now seen corresponding path program 1 times [2023-11-19 07:50:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715235688] [2023-11-19 07:50:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,886 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 07:50:17,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715235688] [2023-11-19 07:50:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715235688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:17,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:17,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265253261] [2023-11-19 07:50:17,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:17,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:17,889 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 07:50:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,941 INFO L93 Difference]: Finished difference Result 156 states and 218 transitions. [2023-11-19 07:50:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:17,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-11-19 07:50:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,943 INFO L225 Difference]: With dead ends: 156 [2023-11-19 07:50:17,943 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 07:50:17,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:17,945 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 138 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 192 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 07:50:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2023-11-19 07:50:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 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 07:50:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2023-11-19 07:50:17,955 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 29 [2023-11-19 07:50:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,955 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2023-11-19 07:50:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 07:50:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2023-11-19 07:50:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:50:17,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,957 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] [2023-11-19 07:50:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:50:17,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1721161933, now seen corresponding path program 1 times [2023-11-19 07:50:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320437321] [2023-11-19 07:50:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,079 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 07:50:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:18,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320437321] [2023-11-19 07:50:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320437321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287411875] [2023-11-19 07:50:18,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:18,081 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 07:50:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:18,130 INFO L93 Difference]: Finished difference Result 143 states and 199 transitions. [2023-11-19 07:50:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:18,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-11-19 07:50:18,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:18,131 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:50:18,131 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 07:50:18,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:18,133 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 118 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:18,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 192 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 07:50:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-11-19 07:50:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 70 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 07:50:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2023-11-19 07:50:18,140 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 29 [2023-11-19 07:50:18,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:18,140 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2023-11-19 07:50:18,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 07:50:18,141 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2023-11-19 07:50:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:50:18,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:18,142 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:50:18,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:18,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:18,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash -407581383, now seen corresponding path program 1 times [2023-11-19 07:50:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870850953] [2023-11-19 07:50:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870850953] [2023-11-19 07:50:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870850953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941401064] [2023-11-19 07:50:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:18,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:18,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:18,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-19 07:50:18,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:19,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941401064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:19,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-19 07:50:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836701313] [2023-11-19 07:50:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:19,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:19,185 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 07:50:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:19,415 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2023-11-19 07:50:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-11-19 07:50:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,417 INFO L225 Difference]: With dead ends: 140 [2023-11-19 07:50:19,419 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 07:50:19,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:19,424 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:19,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 61 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 07:50:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2023-11-19 07:50:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 82 states have internal predecessors, (112), 0 states have call successors, (0), 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 07:50:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2023-11-19 07:50:19,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 49 [2023-11-19 07:50:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,438 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2023-11-19 07:50:19,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 07:50:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2023-11-19 07:50:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:50:19,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,445 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:50:19,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:19,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:50:19,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:19,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -204686061, now seen corresponding path program 1 times [2023-11-19 07:50:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:19,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94246279] [2023-11-19 07:50:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94246279] [2023-11-19 07:50:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94246279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666467890] [2023-11-19 07:50:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:20,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:20,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666467890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:21,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-19 07:50:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610281076] [2023-11-19 07:50:21,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:50:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:50:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:21,060 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:50:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:21,500 INFO L93 Difference]: Finished difference Result 129 states and 176 transitions. [2023-11-19 07:50:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:50:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 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 50 [2023-11-19 07:50:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:21,502 INFO L225 Difference]: With dead ends: 129 [2023-11-19 07:50:21,502 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 07:50:21,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:50:21,505 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 228 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:21,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 190 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 07:50:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2023-11-19 07:50:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 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 07:50:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2023-11-19 07:50:21,513 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 50 [2023-11-19 07:50:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:21,513 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2023-11-19 07:50:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:50:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2023-11-19 07:50:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:50:21,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:21,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:21,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:21,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:21,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:21,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1628030225, now seen corresponding path program 1 times [2023-11-19 07:50:21,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826343417] [2023-11-19 07:50:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:22,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826343417] [2023-11-19 07:50:22,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826343417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894150129] [2023-11-19 07:50:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:22,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:50:22,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894150129] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:23,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:23,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2023-11-19 07:50:23,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676402322] [2023-11-19 07:50:23,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:50:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:50:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:50:23,374 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 19 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:50:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,003 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2023-11-19 07:50:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:50:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 19 states have internal predecessors, (142), 0 states have call successors, (0), 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 50 [2023-11-19 07:50:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,004 INFO L225 Difference]: With dead ends: 102 [2023-11-19 07:50:24,004 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:50:24,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:50:24,006 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 352 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 147 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:50:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:50:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 07:50:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:50:24,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2023-11-19 07:50:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,007 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:50:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 19 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:50:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:50:24,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:50:24,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:50:24,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:24,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:50:24,278 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 23 187) no Hoare annotation was computed. [2023-11-19 07:50:24,278 INFO L899 garLoopResultBuilder]: For program point L135(line 135) no Hoare annotation was computed. [2023-11-19 07:50:24,278 INFO L899 garLoopResultBuilder]: For program point L135-2(line 135) no Hoare annotation was computed. [2023-11-19 07:50:24,278 INFO L899 garLoopResultBuilder]: For program point L135-4(line 135) no Hoare annotation was computed. [2023-11-19 07:50:24,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:50:24,279 INFO L895 garLoopResultBuilder]: At program point L86-2(lines 86 185) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~var_12~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~state_15~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~var_22~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~var_7~0#1| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~state_28~0#1| 0) (= |ULTIMATE.start_main_~state_26~0#1| 0) (= |ULTIMATE.start_main_~state_8~0#1| 0) .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~var_24_arg_0~0#1| 1) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~next_74_arg_1~0#1|) 256) 256) |ULTIMATE.start_main_~next_74_arg_1~0#1|)) .cse0 .cse1 (<= 0 (+ |ULTIMATE.start_main_~state_8~0#1| (* 256 (div (* (- 1) |ULTIMATE.start_main_~state_8~0#1|) 256)))) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~next_76_arg_1~0#1| 0)))) [2023-11-19 07:50:24,279 INFO L899 garLoopResultBuilder]: For program point L86-3(lines 86 185) no Hoare annotation was computed. [2023-11-19 07:50:24,279 INFO L899 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2023-11-19 07:50:24,279 INFO L899 garLoopResultBuilder]: For program point L177-2(line 177) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L177-4(line 177) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L136-2(line 136) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2023-11-19 07:50:24,280 INFO L899 garLoopResultBuilder]: For program point L136-4(line 136) no Hoare annotation was computed. [2023-11-19 07:50:24,281 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2023-11-19 07:50:24,281 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2023-11-19 07:50:24,282 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L154-2(line 154) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L154-4(line 154) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L171-2(line 171) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-19 07:50:24,283 INFO L899 garLoopResultBuilder]: For program point L171-4(line 171) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L72-2(line 72) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L72-4(line 72) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L130(line 130) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L130-2(line 130) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L130-4(line 130) no Hoare annotation was computed. [2023-11-19 07:50:24,284 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point L73-2(line 73) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point L73-4(line 73) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point L123-2(line 123) no Hoare annotation was computed. [2023-11-19 07:50:24,285 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L123-4(line 123) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L115-4(line 115) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-11-19 07:50:24,286 INFO L899 garLoopResultBuilder]: For program point L74-2(line 74) no Hoare annotation was computed. [2023-11-19 07:50:24,287 INFO L899 garLoopResultBuilder]: For program point L74-4(line 74) no Hoare annotation was computed. [2023-11-19 07:50:24,287 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:50:24,290 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:24,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:50:24,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:50:24 BoogieIcfgContainer [2023-11-19 07:50:24,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:50:24,311 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:50:24,311 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:50:24,311 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:50:24,312 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:13" (3/4) ... [2023-11-19 07:50:24,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:50:24,337 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 07:50:24,338 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:50:24,339 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:50:24,339 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:50:24,503 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:50:24,504 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:50:24,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:50:24,505 INFO L158 Benchmark]: Toolchain (without parser) took 12445.02ms. Allocated memory was 138.4MB in the beginning and 243.3MB in the end (delta: 104.9MB). Free memory was 91.9MB in the beginning and 128.4MB in the end (delta: -36.4MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,505 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 113.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:50:24,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.14ms. Allocated memory is still 138.4MB. Free memory was 91.9MB in the beginning and 77.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.28ms. Allocated memory is still 138.4MB. Free memory was 77.9MB in the beginning and 71.9MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,506 INFO L158 Benchmark]: Boogie Preprocessor took 90.64ms. Allocated memory is still 138.4MB. Free memory was 71.9MB in the beginning and 68.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,507 INFO L158 Benchmark]: RCFGBuilder took 895.16ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 68.8MB in the beginning and 123.8MB in the end (delta: -55.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,508 INFO L158 Benchmark]: TraceAbstraction took 10737.70ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 122.8MB in the beginning and 136.8MB in the end (delta: -14.0MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,508 INFO L158 Benchmark]: Witness Printer took 193.09ms. Allocated memory is still 243.3MB. Free memory was 136.8MB in the beginning and 128.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:50:24,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 113.2MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.14ms. Allocated memory is still 138.4MB. Free memory was 91.9MB in the beginning and 77.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.28ms. Allocated memory is still 138.4MB. Free memory was 77.9MB in the beginning and 71.9MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.64ms. Allocated memory is still 138.4MB. Free memory was 71.9MB in the beginning and 68.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 895.16ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 68.8MB in the beginning and 123.8MB in the end (delta: -55.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10737.70ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 122.8MB in the beginning and 136.8MB in the end (delta: -14.0MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Witness Printer took 193.09ms. Allocated memory is still 243.3MB. Free memory was 136.8MB in the beginning and 128.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1714 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1714 mSDsluCounter, 2370 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1727 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1286 IncrementalHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 643 mSDtfsCounter, 1286 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 360 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=9, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 218 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 70 HoareAnnotationTreeSize, 1 FomulaSimplifications, 796 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 3686 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1034 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 72/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: (((((((((var_12 == 1) && (state_28 == 0)) && (state_26 == 0)) && (state_8 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) || (((((((((var_24_arg_0 == 1) && (0 <= ((((-1 * next_74_arg_1) / 256) * 256) + next_74_arg_1))) && (var_12 == 1)) && (state_15 == 0)) && (0 <= (state_8 + (256 * ((-1 * state_8) / 256))))) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) && (next_76_arg_1 == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:50:24,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbad8216-204e-4a6e-bd1f-e362a20643af/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE