./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_ptr_partial_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/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_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_ptr_partial_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 830adb811cc268031c58590b9b139b3834070c408d8c80014d1db1461ae4c329 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:55,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:55,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:46:55,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:55,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:55,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:55,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:55,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:55,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:55,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:55,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:55,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:55,322 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:55,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:55,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:55,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:55,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:55,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:55,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:55,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:55,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:55,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:55,330 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:46:55,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:55,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:55,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:55,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:55,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:55,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:55,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:55,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:55,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:55,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:55,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:55,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:55,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:55,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:55,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:55,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:55,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:55,342 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:55,342 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_80f23252-a437-41b1-b0fc-4e0872bfa88d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830adb811cc268031c58590b9b139b3834070c408d8c80014d1db1461ae4c329 [2023-11-19 07:46:55,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:55,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:55,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:55,738 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:55,739 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:55,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/array-industry-pattern/array_ptr_partial_init.i [2023-11-19 07:46:58,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:59,130 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:59,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/sv-benchmarks/c/array-industry-pattern/array_ptr_partial_init.i [2023-11-19 07:46:59,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/data/da2ad2650/832ead49d77d4d41a09a1185c7f4643b/FLAG17bc6b443 [2023-11-19 07:46:59,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/data/da2ad2650/832ead49d77d4d41a09a1185c7f4643b [2023-11-19 07:46:59,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:59,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:59,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:59,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:59,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:59,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460b6870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59, skipping insertion in model container [2023-11-19 07:46:59,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:59,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:59,403 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:59,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:59,454 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:59,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59 WrapperNode [2023-11-19 07:46:59,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:59,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:59,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:59,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:59,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,499 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-11-19 07:46:59,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:59,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:59,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:59,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:59,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:59,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:59,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:59,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:59,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (1/1) ... [2023-11-19 07:46:59,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:59,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:59,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:46:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:46:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:46:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:59,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:59,762 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:59,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:59,987 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:59,995 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:59,996 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:46:59,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:59 BoogieIcfgContainer [2023-11-19 07:47:00,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:00,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:00,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:00,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:00,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:59" (1/3) ... [2023-11-19 07:47:00,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76315cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:00, skipping insertion in model container [2023-11-19 07:47:00,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:59" (2/3) ... [2023-11-19 07:47:00,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76315cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:00, skipping insertion in model container [2023-11-19 07:47:00,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:59" (3/3) ... [2023-11-19 07:47:00,010 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_partial_init.i [2023-11-19 07:47:00,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:00,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:47:00,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:00,094 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;@55461923, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:00,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:47:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 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 07:47:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:47:00,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:00,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:00,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2023-11-19 07:47:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633913651] [2023-11-19 07:47:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,551 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 07:47:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633913651] [2023-11-19 07:47:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633913651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659667906] [2023-11-19 07:47:00,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:00,620 INFO L87 Difference]: Start difference. First operand has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 07:47:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:00,799 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2023-11-19 07:47:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:00,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 07:47:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:00,816 INFO L225 Difference]: With dead ends: 75 [2023-11-19 07:47:00,817 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:47:00,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 07:47:00,828 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:00,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 60 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:47:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2023-11-19 07:47:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 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 07:47:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-19 07:47:00,889 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 5 [2023-11-19 07:47:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:00,891 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-19 07:47:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 07:47:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-19 07:47:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:47:00,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:00,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:47:00,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:00,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:00,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2023-11-19 07:47:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731682924] [2023-11-19 07:47:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731682924] [2023-11-19 07:47:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731682924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149253411] [2023-11-19 07:47:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:01,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:01,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:01,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149253411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:01,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 07:47:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686830910] [2023-11-19 07:47:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:01,248 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 07:47:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:01,352 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-11-19 07:47:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-19 07:47:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:01,354 INFO L225 Difference]: With dead ends: 42 [2023-11-19 07:47:01,355 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 07:47:01,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:01,358 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:01,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 07:47:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2023-11-19 07:47:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 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 07:47:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-19 07:47:01,366 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 9 [2023-11-19 07:47:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:01,367 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-19 07:47:01,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 07:47:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-19 07:47:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:47:01,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:01,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:47:01,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:01,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:01,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2023-11-19 07:47:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352641981] [2023-11-19 07:47:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:01,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352641981] [2023-11-19 07:47:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352641981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:01,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:01,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:01,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390907539] [2023-11-19 07:47:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:01,709 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 07:47:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:01,755 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-19 07:47:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-19 07:47:01,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:01,757 INFO L225 Difference]: With dead ends: 29 [2023-11-19 07:47:01,758 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 07:47:01,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:01,760 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:01,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 07:47:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-11-19 07:47:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 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 07:47:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-19 07:47:01,768 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2023-11-19 07:47:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:01,768 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-19 07:47:01,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 07:47:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-19 07:47:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:47:01,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:01,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:01,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1713504278, now seen corresponding path program 1 times [2023-11-19 07:47:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727195839] [2023-11-19 07:47:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727195839] [2023-11-19 07:47:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727195839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636059744] [2023-11-19 07:47:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:01,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:01,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:01,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:02,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636059744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:02,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:02,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:47:02,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375862345] [2023-11-19 07:47:02,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:02,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:47:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:47:02,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:02,075 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 07:47:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:02,167 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2023-11-19 07:47:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2023-11-19 07:47:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:02,169 INFO L225 Difference]: With dead ends: 62 [2023-11-19 07:47:02,169 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 07:47:02,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:02,171 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:02,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 07:47:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2023-11-19 07:47:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 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 07:47:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-11-19 07:47:02,179 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 11 [2023-11-19 07:47:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:02,180 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-11-19 07:47:02,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 07:47:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-11-19 07:47:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:47:02,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:02,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:02,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:02,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:02,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:02,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash -230725406, now seen corresponding path program 2 times [2023-11-19 07:47:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:02,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458305722] [2023-11-19 07:47:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 07:47:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:02,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458305722] [2023-11-19 07:47:02,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458305722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:02,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:02,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:02,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785179310] [2023-11-19 07:47:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:02,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:02,544 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 07:47:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:02,604 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2023-11-19 07:47:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 19 [2023-11-19 07:47:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:02,607 INFO L225 Difference]: With dead ends: 45 [2023-11-19 07:47:02,607 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 07:47:02,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:02,608 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:02,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 07:47:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2023-11-19 07:47:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 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 07:47:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-11-19 07:47:02,615 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 19 [2023-11-19 07:47:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:02,616 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-11-19 07:47:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 07:47:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-11-19 07:47:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:47:02,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:02,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:02,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:02,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2133188386, now seen corresponding path program 1 times [2023-11-19 07:47:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301544720] [2023-11-19 07:47:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:02,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301544720] [2023-11-19 07:47:02,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301544720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548387345] [2023-11-19 07:47:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:02,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:02,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:02,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:03,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548387345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:03,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-19 07:47:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705183631] [2023-11-19 07:47:03,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:47:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:47:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:47:03,232 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 07:47:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:03,481 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2023-11-19 07:47:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:47:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 23 [2023-11-19 07:47:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:03,484 INFO L225 Difference]: With dead ends: 79 [2023-11-19 07:47:03,484 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 07:47:03,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:47:03,486 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:03,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 55 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 07:47:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-11-19 07:47:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 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 07:47:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2023-11-19 07:47:03,501 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 23 [2023-11-19 07:47:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:03,502 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-11-19 07:47:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 07:47:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2023-11-19 07:47:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:47:03,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:03,506 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:03,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:47:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:03,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:03,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1327043278, now seen corresponding path program 2 times [2023-11-19 07:47:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:03,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861756964] [2023-11-19 07:47:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861756964] [2023-11-19 07:47:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861756964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252805587] [2023-11-19 07:47:04,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:04,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:04,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:04,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:04,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:04,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:04,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:04,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252805587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:04,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:04,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-11-19 07:47:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519310131] [2023-11-19 07:47:04,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-19 07:47:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:04,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-19 07:47:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:47:04,954 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 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 07:47:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:05,474 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2023-11-19 07:47:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-19 07:47:05,476 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 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 39 [2023-11-19 07:47:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:05,480 INFO L225 Difference]: With dead ends: 111 [2023-11-19 07:47:05,480 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 07:47:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 07:47:05,483 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 186 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:05,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 70 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 07:47:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2023-11-19 07:47:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2023-11-19 07:47:05,518 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 39 [2023-11-19 07:47:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2023-11-19 07:47:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 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 07:47:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2023-11-19 07:47:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:47:05,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:05,525 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:05,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:05,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:47:05,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:05,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -753838418, now seen corresponding path program 3 times [2023-11-19 07:47:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:05,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020006057] [2023-11-19 07:47:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:05,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:47:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020006057] [2023-11-19 07:47:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020006057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967616103] [2023-11-19 07:47:07,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:07,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:07,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:07,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:07,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:47:07,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:07,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:07,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:47:07,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967616103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [33] total 36 [2023-11-19 07:47:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491948205] [2023-11-19 07:47:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:47:07,558 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 07:47:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,650 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2023-11-19 07:47:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 71 [2023-11-19 07:47:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,653 INFO L225 Difference]: With dead ends: 91 [2023-11-19 07:47:07,653 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 07:47:07,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:47:07,656 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:07,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 07:47:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2023-11-19 07:47:07,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2023-11-19 07:47:07,666 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 71 [2023-11-19 07:47:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,667 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2023-11-19 07:47:07,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 07:47:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2023-11-19 07:47:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:47:07,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,670 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:07,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:47:07,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:07,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1894154414, now seen corresponding path program 1 times [2023-11-19 07:47:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727450647] [2023-11-19 07:47:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-11-19 07:47:08,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727450647] [2023-11-19 07:47:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727450647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064807256] [2023-11-19 07:47:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:08,121 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 07:47:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,164 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2023-11-19 07:47:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 72 [2023-11-19 07:47:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,167 INFO L225 Difference]: With dead ends: 83 [2023-11-19 07:47:08,167 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 07:47:08,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:08,171 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 07:47:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2023-11-19 07:47:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-11-19 07:47:08,193 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 72 [2023-11-19 07:47:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,193 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-11-19 07:47:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 07:47:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-11-19 07:47:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:47:08,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,196 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:47:08,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:08,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1288975798, now seen corresponding path program 1 times [2023-11-19 07:47:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370798031] [2023-11-19 07:47:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:47:08,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370798031] [2023-11-19 07:47:08,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370798031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020934173] [2023-11-19 07:47:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:08,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:08,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:08,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:47:08,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:09,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020934173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:10,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:10,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 33, 33] total 66 [2023-11-19 07:47:10,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15083549] [2023-11-19 07:47:10,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:10,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-19 07:47:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-19 07:47:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3198, Unknown=0, NotChecked=0, Total=4290 [2023-11-19 07:47:10,915 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 0 states have call successors, (0), 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 07:47:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:12,356 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2023-11-19 07:47:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-19 07:47:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 0 states have call successors, (0), 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 75 [2023-11-19 07:47:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:12,362 INFO L225 Difference]: With dead ends: 172 [2023-11-19 07:47:12,363 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 07:47:12,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2600, Invalid=6712, Unknown=0, NotChecked=0, Total=9312 [2023-11-19 07:47:12,369 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:12,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 94 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 07:47:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2023-11-19 07:47:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 145 states have internal predecessors, (148), 0 states have call successors, (0), 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 07:47:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2023-11-19 07:47:12,389 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 75 [2023-11-19 07:47:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:12,390 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2023-11-19 07:47:12,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.257575757575758) internal successors, (149), 66 states have internal predecessors, (149), 0 states have call successors, (0), 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 07:47:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2023-11-19 07:47:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-19 07:47:12,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:12,407 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:12,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:12,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:12,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1340075662, now seen corresponding path program 2 times [2023-11-19 07:47:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282876900] [2023-11-19 07:47:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1897 trivial. 0 not checked. [2023-11-19 07:47:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282876900] [2023-11-19 07:47:12,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282876900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:12,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:12,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160483626] [2023-11-19 07:47:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:12,950 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 07:47:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:12,999 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2023-11-19 07:47:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 143 [2023-11-19 07:47:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:13,002 INFO L225 Difference]: With dead ends: 154 [2023-11-19 07:47:13,002 INFO L226 Difference]: Without dead ends: 152 [2023-11-19 07:47:13,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:13,003 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:13,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-19 07:47:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-19 07:47:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 151 states have internal predecessors, (154), 0 states have call successors, (0), 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 07:47:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2023-11-19 07:47:13,018 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 143 [2023-11-19 07:47:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:13,018 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2023-11-19 07:47:13,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 07:47:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2023-11-19 07:47:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-19 07:47:13,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:13,022 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:13,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:47:13,022 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:13,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1674974816, now seen corresponding path program 1 times [2023-11-19 07:47:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018650214] [2023-11-19 07:47:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:47:17,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:17,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018650214] [2023-11-19 07:47:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018650214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181762398] [2023-11-19 07:47:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:17,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:17,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:17,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:17,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:47:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:17,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-19 07:47:17,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:47:17,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:47:23,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181762398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:23,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:23,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2023-11-19 07:47:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933698556] [2023-11-19 07:47:23,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-19 07:47:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-19 07:47:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-11-19 07:47:23,250 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand has 130 states, 130 states have (on average 2.0923076923076924) internal successors, (272), 130 states have internal predecessors, (272), 0 states have call successors, (0), 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 07:47:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:27,103 INFO L93 Difference]: Finished difference Result 305 states and 340 transitions. [2023-11-19 07:47:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-11-19 07:47:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0923076923076924) internal successors, (272), 130 states have internal predecessors, (272), 0 states have call successors, (0), 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 149 [2023-11-19 07:47:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:27,114 INFO L225 Difference]: With dead ends: 305 [2023-11-19 07:47:27,114 INFO L226 Difference]: Without dead ends: 280 [2023-11-19 07:47:27,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2023-11-19 07:47:27,143 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 640 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:27,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 92 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-19 07:47:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-11-19 07:47:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 1.014388489208633) internal successors, (282), 279 states have internal predecessors, (282), 0 states have call successors, (0), 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 07:47:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 282 transitions. [2023-11-19 07:47:27,155 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 282 transitions. Word has length 149 [2023-11-19 07:47:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:27,156 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 282 transitions. [2023-11-19 07:47:27,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0923076923076924) internal successors, (272), 130 states have internal predecessors, (272), 0 states have call successors, (0), 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 07:47:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 282 transitions. [2023-11-19 07:47:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-19 07:47:27,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:27,161 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:27,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:27,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:27,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1626528032, now seen corresponding path program 2 times [2023-11-19 07:47:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501628843] [2023-11-19 07:47:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7886 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:47:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501628843] [2023-11-19 07:47:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501628843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019156594] [2023-11-19 07:47:38,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:38,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:38,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:38,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f23252-a437-41b1-b0fc-4e0872bfa88d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:39,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:39,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:39,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-19 07:47:39,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7886 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 07:47:39,827 INFO L327 TraceCheckSpWp]: Computing backward predicates...