./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya --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 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:28:11,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:28:11,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 00:28:11,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:28:11,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:28:11,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:28:11,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:28:11,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:28:11,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:28:11,905 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:28:11,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:28:11,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:28:11,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:28:11,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:28:11,908 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:28:11,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:28:11,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:28:11,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:28:11,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:28:11,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:28:11,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:28:11,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:28:11,912 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:28:11,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:28:11,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:28:11,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:28:11,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:28:11,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:28:11,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:28:11,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:28:11,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:11,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:28:11,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:28:11,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:28:11,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:28:11,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:28:11,918 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_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-11-29 00:28:12,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:28:12,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:28:12,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:28:12,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:28:12,149 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:28:12,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-11-29 00:28:14,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:28:15,041 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:28:15,042 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-11-29 00:28:15,049 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/data/3cd864b4e/c245b7af804e47959cb43ec20db3e548/FLAG13d5f2591 [2023-11-29 00:28:15,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/data/3cd864b4e/c245b7af804e47959cb43ec20db3e548 [2023-11-29 00:28:15,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:28:15,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:28:15,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:28:15,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:28:15,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:28:15,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228548c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15, skipping insertion in model container [2023-11-29 00:28:15,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:28:15,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:28:15,204 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:28:15,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:28:15,227 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:28:15,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15 WrapperNode [2023-11-29 00:28:15,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:28:15,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:28:15,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:28:15,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:28:15,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,255 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-29 00:28:15,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:28:15,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:28:15,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:28:15,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:28:15,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,273 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 00:28:15,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:28:15,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:28:15,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:28:15,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:28:15,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (1/1) ... [2023-11-29 00:28:15,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:15,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:15,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:28:15,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:28:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:28:15,416 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:28:15,418 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:28:15,500 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:28:15,522 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:28:15,523 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:28:15,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:15 BoogieIcfgContainer [2023-11-29 00:28:15,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:28:15,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:28:15,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:28:15,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:28:15,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:28:15" (1/3) ... [2023-11-29 00:28:15,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df42470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:15, skipping insertion in model container [2023-11-29 00:28:15,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:28:15" (2/3) ... [2023-11-29 00:28:15,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df42470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:15, skipping insertion in model container [2023-11-29 00:28:15,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:15" (3/3) ... [2023-11-29 00:28:15,532 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-11-29 00:28:15,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:28:15,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:28:15,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:28:15,593 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;@3c1925f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:28:15,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 00:28:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 2.0) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 00:28:15,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:15,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:28:15,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:15,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash 71274208, now seen corresponding path program 1 times [2023-11-29 00:28:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:15,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504534493] [2023-11-29 00:28:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504534493] [2023-11-29 00:28:15,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504534493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:15,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:28:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467176221] [2023-11-29 00:28:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:15,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:15,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:15,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:15,814 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 2.0) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) 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) [2023-11-29 00:28:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:15,884 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2023-11-29 00:28:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:15,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) 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 [2023-11-29 00:28:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:15,894 INFO L225 Difference]: With dead ends: 27 [2023-11-29 00:28:15,894 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 00:28:15,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:28:15,900 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:15,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 00:28:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-29 00:28:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-29 00:28:15,932 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2023-11-29 00:28:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:15,933 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-29 00:28:15,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) 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) [2023-11-29 00:28:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-29 00:28:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 00:28:15,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:15,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:28:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:28:15,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:15,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 71274263, now seen corresponding path program 1 times [2023-11-29 00:28:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323541258] [2023-11-29 00:28:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323541258] [2023-11-29 00:28:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323541258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349040450] [2023-11-29 00:28:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:15,991 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. 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) [2023-11-29 00:28:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,017 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-29 00:28:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:16,018 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 [2023-11-29 00:28:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,019 INFO L225 Difference]: With dead ends: 13 [2023-11-29 00:28:16,019 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 00:28:16,020 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 [2023-11-29 00:28:16,021 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 00:28:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-29 00:28:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-29 00:28:16,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2023-11-29 00:28:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:16,029 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-29 00:28:16,029 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) [2023-11-29 00:28:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-29 00:28:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:28:16,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:16,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:28:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:28:16,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2085465086, now seen corresponding path program 1 times [2023-11-29 00:28:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415623142] [2023-11-29 00:28:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:16,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:16,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415623142] [2023-11-29 00:28:16,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415623142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:16,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:16,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960446555] [2023-11-29 00:28:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:16,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:16,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:16,097 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,123 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-29 00:28:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-11-29 00:28:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,136 INFO L225 Difference]: With dead ends: 14 [2023-11-29 00:28:16,136 INFO L226 Difference]: Without dead ends: 13 [2023-11-29 00:28:16,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:28:16,138 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-29 00:28:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-29 00:28:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-29 00:28:16,144 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2023-11-29 00:28:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:16,145 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-29 00:28:16,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-29 00:28:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:28:16,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:16,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:28:16,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:16,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1388389389, now seen corresponding path program 1 times [2023-11-29 00:28:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43038294] [2023-11-29 00:28:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:28:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:16,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43038294] [2023-11-29 00:28:16,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43038294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:16,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:16,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725838044] [2023-11-29 00:28:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:28:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:28:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:28:16,192 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2023-11-29 00:28:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,214 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-29 00:28:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:28:16,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2023-11-29 00:28:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,215 INFO L225 Difference]: With dead ends: 24 [2023-11-29 00:28:16,215 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 00:28:16,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:28:16,218 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 00:28:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-29 00:28:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-11-29 00:28:16,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2023-11-29 00:28:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:16,228 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-11-29 00:28:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2023-11-29 00:28:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-11-29 00:28:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:28:16,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:16,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:28:16,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:28:16,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:16,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1388387691, now seen corresponding path program 1 times [2023-11-29 00:28:16,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:16,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357201702] [2023-11-29 00:28:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:16,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357201702] [2023-11-29 00:28:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357201702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:16,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031308284] [2023-11-29 00:28:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:16,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:16,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:16,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:28:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:28:16,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:16,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:28:16,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031308284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:16,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-29 00:28:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63846718] [2023-11-29 00:28:16,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:16,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:28:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:28:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:28:16,492 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-11-29 00:28:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,554 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-11-29 00:28:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:28:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 9 [2023-11-29 00:28:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,555 INFO L225 Difference]: With dead ends: 37 [2023-11-29 00:28:16,555 INFO L226 Difference]: Without dead ends: 21 [2023-11-29 00:28:16,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:28:16,557 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-29 00:28:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-29 00:28:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-29 00:28:16,565 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2023-11-29 00:28:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:16,566 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-29 00:28:16,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-11-29 00:28:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-29 00:28:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:28:16,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:16,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 00:28:16,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:16,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:16,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:16,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1111957975, now seen corresponding path program 1 times [2023-11-29 00:28:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225923308] [2023-11-29 00:28:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:28:16,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225923308] [2023-11-29 00:28:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225923308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:16,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613003331] [2023-11-29 00:28:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:16,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:16,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:16,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:16,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:28:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:16,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:28:16,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:28:16,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:28:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613003331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:16,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-29 00:28:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203523407] [2023-11-29 00:28:16,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:28:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:28:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:28:16,938 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) [2023-11-29 00:28:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,981 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-11-29 00:28:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:28:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) Word has length 16 [2023-11-29 00:28:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,983 INFO L225 Difference]: With dead ends: 51 [2023-11-29 00:28:16,983 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 00:28:16,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:28:16,984 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 00:28:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2023-11-29 00:28:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-11-29 00:28:16,997 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 16 [2023-11-29 00:28:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-11-29 00:28:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) [2023-11-29 00:28:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-11-29 00:28:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:28:16,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:16,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:17,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:28:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:17,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1111959673, now seen corresponding path program 1 times [2023-11-29 00:28:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792256266] [2023-11-29 00:28:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:28:17,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792256266] [2023-11-29 00:28:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792256266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623333060] [2023-11-29 00:28:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:17,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:17,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:17,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:28:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:17,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:28:17,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:28:17,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:28:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623333060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:17,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 00:28:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297055781] [2023-11-29 00:28:17,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:17,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:28:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:28:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:28:17,493 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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) [2023-11-29 00:28:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:17,921 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2023-11-29 00:28:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:28:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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) Word has length 16 [2023-11-29 00:28:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:17,922 INFO L225 Difference]: With dead ends: 69 [2023-11-29 00:28:17,922 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 00:28:17,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:28:17,924 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 62 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:17,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 8 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:28:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 00:28:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2023-11-29 00:28:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-11-29 00:28:17,938 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 16 [2023-11-29 00:28:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:17,938 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-11-29 00:28:17,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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) [2023-11-29 00:28:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-11-29 00:28:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:28:17,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:17,939 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:17,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:28:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 00:28:18,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:18,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2001877415, now seen corresponding path program 2 times [2023-11-29 00:28:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:18,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123204499] [2023-11-29 00:28:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:28:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:18,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123204499] [2023-11-29 00:28:18,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123204499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276211869] [2023-11-29 00:28:18,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:18,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:18,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:18,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:28:18,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:28:18,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:18,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:28:18,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:28:18,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:28:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276211869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:18,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-29 00:28:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4854800] [2023-11-29 00:28:18,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:28:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:28:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:28:18,523 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:19,115 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2023-11-29 00:28:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:28:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 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 22 [2023-11-29 00:28:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:19,119 INFO L225 Difference]: With dead ends: 107 [2023-11-29 00:28:19,119 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 00:28:19,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:28:19,122 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 67 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:19,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 7 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:28:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 00:28:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2023-11-29 00:28:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-11-29 00:28:19,135 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 22 [2023-11-29 00:28:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-11-29 00:28:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-11-29 00:28:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 00:28:19,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:19,137 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-29 00:28:19,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:28:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:19,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash 911764211, now seen corresponding path program 2 times [2023-11-29 00:28:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927004022] [2023-11-29 00:28:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-29 00:28:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927004022] [2023-11-29 00:28:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927004022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823948866] [2023-11-29 00:28:19,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:19,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:19,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:28:19,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:28:19,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:19,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:28:19,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-29 00:28:19,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-29 00:28:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823948866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:19,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-11-29 00:28:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191774978] [2023-11-29 00:28:19,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:19,539 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-29 00:28:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:19,559 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-29 00:28:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:19,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 37 [2023-11-29 00:28:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:19,562 INFO L225 Difference]: With dead ends: 44 [2023-11-29 00:28:19,563 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:28:19,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:28:19,564 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:19,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:28:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:28:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-11-29 00:28:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-11-29 00:28:19,573 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2023-11-29 00:28:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:19,573 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-11-29 00:28:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2023-11-29 00:28:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-11-29 00:28:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 00:28:19,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:19,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-29 00:28:19,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:28:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash 911765909, now seen corresponding path program 3 times [2023-11-29 00:28:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129833906] [2023-11-29 00:28:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:28:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129833906] [2023-11-29 00:28:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129833906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796418148] [2023-11-29 00:28:19,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:19,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:19,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:19,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:28:19,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 00:28:19,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:19,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:28:19,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:28:20,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:28:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796418148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:20,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 00:28:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579498900] [2023-11-29 00:28:20,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:20,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:28:20,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:28:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:28:20,204 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 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) [2023-11-29 00:28:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:21,321 INFO L93 Difference]: Finished difference Result 162 states and 189 transitions. [2023-11-29 00:28:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 00:28:21,321 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-29 00:28:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:21,323 INFO L225 Difference]: With dead ends: 162 [2023-11-29 00:28:21,323 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 00:28:21,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1705, Invalid=5101, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 00:28:21,327 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:21,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 13 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:28:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 00:28:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2023-11-29 00:28:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2) internal successors, (132), 110 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2023-11-29 00:28:21,348 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 37 [2023-11-29 00:28:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:21,348 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2023-11-29 00:28:21,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 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) [2023-11-29 00:28:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2023-11-29 00:28:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:28:21,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:21,350 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 4, 4, 4, 1, 1, 1] [2023-11-29 00:28:21,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:28:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:21,550 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:21,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -602748299, now seen corresponding path program 4 times [2023-11-29 00:28:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013800432] [2023-11-29 00:28:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:28:21,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013800432] [2023-11-29 00:28:21,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013800432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627538590] [2023-11-29 00:28:21,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:28:21,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:21,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:21,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:21,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:28:21,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:28:21,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:21,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:28:21,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 92 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:28:21,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:28:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627538590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:22,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-11-29 00:28:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006734960] [2023-11-29 00:28:22,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:28:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:28:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:28:22,147 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:23,173 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2023-11-29 00:28:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:28:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-29 00:28:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:23,177 INFO L225 Difference]: With dead ends: 451 [2023-11-29 00:28:23,177 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 00:28:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=920, Invalid=3370, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 00:28:23,180 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:23,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 00:28:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 317. [2023-11-29 00:28:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.1518987341772151) internal successors, (364), 316 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 364 transitions. [2023-11-29 00:28:23,224 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 364 transitions. Word has length 43 [2023-11-29 00:28:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:23,225 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 364 transitions. [2023-11-29 00:28:23,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 364 transitions. [2023-11-29 00:28:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:28:23,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:23,227 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 4, 4, 4, 1, 1, 1] [2023-11-29 00:28:23,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:28:23,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:23,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:23,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1564607824, now seen corresponding path program 5 times [2023-11-29 00:28:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531145823] [2023-11-29 00:28:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 112 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:28:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531145823] [2023-11-29 00:28:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531145823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159154618] [2023-11-29 00:28:23,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:28:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:23,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:23,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:28:23,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-29 00:28:23,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:23,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:28:23,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 71 proven. 93 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:28:23,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:28:24,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159154618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:24,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 30 [2023-11-29 00:28:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154122602] [2023-11-29 00:28:24,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:24,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:28:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:28:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:28:24,070 INFO L87 Difference]: Start difference. First operand 317 states and 364 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:24,917 INFO L93 Difference]: Finished difference Result 629 states and 717 transitions. [2023-11-29 00:28:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 00:28:24,918 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-29 00:28:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:24,920 INFO L225 Difference]: With dead ends: 629 [2023-11-29 00:28:24,920 INFO L226 Difference]: Without dead ends: 396 [2023-11-29 00:28:24,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=904, Invalid=3128, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 00:28:24,927 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 140 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:28:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-29 00:28:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 347. [2023-11-29 00:28:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.1473988439306357) internal successors, (397), 346 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 397 transitions. [2023-11-29 00:28:24,968 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 397 transitions. Word has length 46 [2023-11-29 00:28:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:24,968 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 397 transitions. [2023-11-29 00:28:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 397 transitions. [2023-11-29 00:28:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 00:28:24,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:24,970 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 4, 4, 4, 1, 1, 1] [2023-11-29 00:28:24,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:28:25,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:25,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:25,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:25,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1437437661, now seen corresponding path program 6 times [2023-11-29 00:28:25,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:25,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864292296] [2023-11-29 00:28:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:25,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 56 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:28:25,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864292296] [2023-11-29 00:28:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864292296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685522902] [2023-11-29 00:28:25,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:28:25,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:25,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:25,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:25,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:28:25,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-29 00:28:25,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:25,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:28:25,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 40 proven. 146 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:28:25,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 4 proven. 182 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:28:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685522902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:25,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:25,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2023-11-29 00:28:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731675875] [2023-11-29 00:28:25,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:25,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:28:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:25,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:28:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:28:25,873 INFO L87 Difference]: Start difference. First operand 347 states and 397 transitions. Second operand has 35 states, 35 states have (on average 3.6) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:30,732 INFO L93 Difference]: Finished difference Result 1605 states and 1978 transitions. [2023-11-29 00:28:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-11-29 00:28:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-29 00:28:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:30,739 INFO L225 Difference]: With dead ends: 1605 [2023-11-29 00:28:30,739 INFO L226 Difference]: Without dead ends: 1302 [2023-11-29 00:28:30,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10059 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4072, Invalid=23318, Unknown=0, NotChecked=0, Total=27390 [2023-11-29 00:28:30,749 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:30,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:28:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2023-11-29 00:28:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 389. [2023-11-29 00:28:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.157216494845361) internal successors, (449), 388 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 449 transitions. [2023-11-29 00:28:30,854 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 449 transitions. Word has length 49 [2023-11-29 00:28:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 449 transitions. [2023-11-29 00:28:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6) internal successors, (126), 35 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 449 transitions. [2023-11-29 00:28:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 00:28:30,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:30,856 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-29 00:28:30,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:28:31,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:28:31,060 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:31,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash 172840981, now seen corresponding path program 7 times [2023-11-29 00:28:31,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:31,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813249184] [2023-11-29 00:28:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:31,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:28:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:31,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813249184] [2023-11-29 00:28:31,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813249184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:31,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017050620] [2023-11-29 00:28:31,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:28:31,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:31,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:31,314 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:31,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:28:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:31,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:28:31,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:28:31,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:28:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017050620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:31,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:31,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-11-29 00:28:31,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450419647] [2023-11-29 00:28:31,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 00:28:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 00:28:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:28:31,866 INFO L87 Difference]: Start difference. First operand 389 states and 449 transitions. Second operand has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:35,753 INFO L93 Difference]: Finished difference Result 3708 states and 4401 transitions. [2023-11-29 00:28:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-11-29 00:28:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-29 00:28:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:35,767 INFO L225 Difference]: With dead ends: 3708 [2023-11-29 00:28:35,767 INFO L226 Difference]: Without dead ends: 3707 [2023-11-29 00:28:35,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14677 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=8320, Invalid=25720, Unknown=0, NotChecked=0, Total=34040 [2023-11-29 00:28:35,773 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 25 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2023-11-29 00:28:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 1059. [2023-11-29 00:28:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 1.166351606805293) internal successors, (1234), 1058 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1234 transitions. [2023-11-29 00:28:35,955 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1234 transitions. Word has length 79 [2023-11-29 00:28:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:35,955 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1234 transitions. [2023-11-29 00:28:35,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1234 transitions. [2023-11-29 00:28:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 00:28:35,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:35,957 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 8, 7, 7, 7, 1, 1, 1] [2023-11-29 00:28:35,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:36,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:28:36,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:36,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1790079047, now seen corresponding path program 8 times [2023-11-29 00:28:36,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:36,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706575784] [2023-11-29 00:28:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:36,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 94 proven. 472 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 00:28:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706575784] [2023-11-29 00:28:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706575784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9430498] [2023-11-29 00:28:36,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:36,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:36,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:36,425 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:36,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:28:36,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:28:36,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:36,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:28:36,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 571 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 00:28:36,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 1 proven. 570 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 00:28:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9430498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:37,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:37,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 42 [2023-11-29 00:28:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798169686] [2023-11-29 00:28:37,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:37,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 00:28:37,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 00:28:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:28:37,252 INFO L87 Difference]: Start difference. First operand 1059 states and 1234 transitions. Second operand has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:54,896 INFO L93 Difference]: Finished difference Result 3742 states and 4403 transitions. [2023-11-29 00:28:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 389 states. [2023-11-29 00:28:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 00:28:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:54,910 INFO L225 Difference]: With dead ends: 3742 [2023-11-29 00:28:54,910 INFO L226 Difference]: Without dead ends: 3089 [2023-11-29 00:28:54,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83556 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=23146, Invalid=159610, Unknown=0, NotChecked=0, Total=182756 [2023-11-29 00:28:54,928 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:54,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 1 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:28:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2023-11-29 00:28:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1841. [2023-11-29 00:28:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.1614130434782608) internal successors, (2137), 1840 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2137 transitions. [2023-11-29 00:28:55,421 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2137 transitions. Word has length 82 [2023-11-29 00:28:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:55,421 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2137 transitions. [2023-11-29 00:28:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2137 transitions. [2023-11-29 00:28:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:28:55,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:55,423 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 12, 11, 11, 11, 1, 1, 1] [2023-11-29 00:28:55,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:28:55,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:28:55,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash -433974499, now seen corresponding path program 9 times [2023-11-29 00:28:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689412682] [2023-11-29 00:28:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 0 proven. 808 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:28:55,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689412682] [2023-11-29 00:28:55,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689412682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:55,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455288704] [2023-11-29 00:28:55,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:55,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:55,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:55,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:55,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:28:56,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-29 00:28:56,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:56,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:28:56,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 424 proven. 184 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-29 00:28:56,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 424 proven. 184 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-29 00:28:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455288704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:56,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 40 [2023-11-29 00:28:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785383358] [2023-11-29 00:28:56,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 00:28:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 00:28:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1364, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 00:28:56,726 INFO L87 Difference]: Start difference. First operand 1841 states and 2137 transitions. Second operand has 41 states, 40 states have (on average 4.4) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:19,251 INFO L93 Difference]: Finished difference Result 8598 states and 10342 transitions. [2023-11-29 00:29:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 410 states. [2023-11-29 00:29:19,251 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.4) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 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 98 [2023-11-29 00:29:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:19,278 INFO L225 Difference]: With dead ends: 8598 [2023-11-29 00:29:19,278 INFO L226 Difference]: Without dead ends: 8597 [2023-11-29 00:29:19,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 443 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95326 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=36359, Invalid=161221, Unknown=0, NotChecked=0, Total=197580 [2023-11-29 00:29:19,287 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2228 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:19,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2228 Valid, 2 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:29:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8597 states. [2023-11-29 00:29:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 2123. [2023-11-29 00:29:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.1663524976437323) internal successors, (2475), 2122 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2475 transitions. [2023-11-29 00:29:20,052 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2475 transitions. Word has length 98 [2023-11-29 00:29:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:20,052 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 2475 transitions. [2023-11-29 00:29:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.4) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2475 transitions. [2023-11-29 00:29:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:29:20,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:20,057 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-29 00:29:20,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:29:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:29:20,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:29:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 705086741, now seen corresponding path program 10 times [2023-11-29 00:29:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:20,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051802089] [2023-11-29 00:29:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:29:20,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051802089] [2023-11-29 00:29:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051802089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980282593] [2023-11-29 00:29:20,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:29:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:20,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:20,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:29:20,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:29:20,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:20,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:29:20,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:29:21,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:29:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980282593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:21,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-11-29 00:29:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255178826] [2023-11-29 00:29:21,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 00:29:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 00:29:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 00:29:21,915 INFO L87 Difference]: Start difference. First operand 2123 states and 2475 transitions. Second operand has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:42,306 INFO L93 Difference]: Finished difference Result 23796 states and 28617 transitions. [2023-11-29 00:29:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-11-29 00:29:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 163 [2023-11-29 00:29:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:42,372 INFO L225 Difference]: With dead ends: 23796 [2023-11-29 00:29:42,372 INFO L226 Difference]: Without dead ends: 23795 [2023-11-29 00:29:42,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68965 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=36346, Invalid=114586, Unknown=0, NotChecked=0, Total=150932 [2023-11-29 00:29:42,385 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 530 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:42,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 44 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:29:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23795 states. [2023-11-29 00:29:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23795 to 7610. [2023-11-29 00:29:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7610 states, 7609 states have (on average 1.1757129714811407) internal successors, (8946), 7609 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7610 states to 7610 states and 8946 transitions. [2023-11-29 00:29:44,194 INFO L78 Accepts]: Start accepts. Automaton has 7610 states and 8946 transitions. Word has length 163 [2023-11-29 00:29:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:44,194 INFO L495 AbstractCegarLoop]: Abstraction has 7610 states and 8946 transitions. [2023-11-29 00:29:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7610 states and 8946 transitions. [2023-11-29 00:29:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 00:29:44,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:44,198 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 21, 20, 20, 20, 1, 1, 1] [2023-11-29 00:29:44,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:29:44,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:29:44,399 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:29:44,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2013386598, now seen corresponding path program 11 times [2023-11-29 00:29:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059060972] [2023-11-29 00:29:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 0 proven. 2617 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-29 00:29:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059060972] [2023-11-29 00:29:44,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059060972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366440568] [2023-11-29 00:29:44,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:29:44,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:44,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:44,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:29:44,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-11-29 00:29:44,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:44,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 00:29:44,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 1548 proven. 1577 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-29 00:29:45,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 1472 proven. 1653 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-29 00:29:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366440568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:46,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 27] total 64 [2023-11-29 00:29:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533642173] [2023-11-29 00:29:46,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 00:29:46,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 00:29:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=3565, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 00:29:46,459 INFO L87 Difference]: Start difference. First operand 7610 states and 8946 transitions. Second operand has 64 states, 64 states have (on average 5.21875) internal successors, (334), 64 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:02,039 INFO L93 Difference]: Finished difference Result 17486 states and 20590 transitions. [2023-11-29 00:30:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2023-11-29 00:30:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.21875) internal successors, (334), 64 states have internal predecessors, (334), 0 states have call successors, (0), 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 188 [2023-11-29 00:30:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:02,056 INFO L225 Difference]: With dead ends: 17486 [2023-11-29 00:30:02,056 INFO L226 Difference]: Without dead ends: 10705 [2023-11-29 00:30:02,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 330 SyntacticMatches, 8 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51333 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=14736, Invalid=119586, Unknown=0, NotChecked=0, Total=134322 [2023-11-29 00:30:02,066 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1903 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:02,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2 Invalid, 4882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 00:30:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10705 states. [2023-11-29 00:30:03,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10705 to 5188. [2023-11-29 00:30:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5187 states have (on average 1.1388085598611914) internal successors, (5907), 5187 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 5907 transitions. [2023-11-29 00:30:03,698 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 5907 transitions. Word has length 188 [2023-11-29 00:30:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:03,699 INFO L495 AbstractCegarLoop]: Abstraction has 5188 states and 5907 transitions. [2023-11-29 00:30:03,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.21875) internal successors, (334), 64 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 5907 transitions. [2023-11-29 00:30:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 00:30:03,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:03,705 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 24, 23, 23, 23, 1, 1, 1] [2023-11-29 00:30:03,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 00:30:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:30:03,906 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:30:03,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1403545960, now seen corresponding path program 12 times [2023-11-29 00:30:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64831744] [2023-11-29 00:30:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 0 proven. 2885 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-11-29 00:30:04,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64831744] [2023-11-29 00:30:04,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64831744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406717324] [2023-11-29 00:30:04,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:30:04,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:04,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:04,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:30:04,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2023-11-29 00:30:04,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:04,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:30:04,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 198 proven. 2687 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-11-29 00:30:04,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 28 proven. 2857 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-11-29 00:30:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406717324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:05,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:05,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-11-29 00:30:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418552847] [2023-11-29 00:30:05,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:05,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 00:30:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 00:30:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=1627, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:30:05,440 INFO L87 Difference]: Start difference. First operand 5188 states and 5907 transitions. Second operand has 47 states, 46 states have (on average 5.304347826086956) internal successors, (244), 47 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:31,559 INFO L93 Difference]: Finished difference Result 19571 states and 23281 transitions. [2023-11-29 00:30:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2023-11-29 00:30:31,560 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.304347826086956) internal successors, (244), 47 states have internal predecessors, (244), 0 states have call successors, (0), 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 203 [2023-11-29 00:30:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:31,581 INFO L225 Difference]: With dead ends: 19571 [2023-11-29 00:30:31,581 INFO L226 Difference]: Without dead ends: 19570 [2023-11-29 00:30:31,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 552 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159061 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=59365, Invalid=246997, Unknown=0, NotChecked=0, Total=306362 [2023-11-29 00:30:31,594 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 700 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:31,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 3 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:30:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19570 states. [2023-11-29 00:30:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19570 to 4384. [2023-11-29 00:30:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 1.1430527036276523) internal successors, (5010), 4383 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 5010 transitions. [2023-11-29 00:30:34,271 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 5010 transitions. Word has length 203 [2023-11-29 00:30:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:34,272 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 5010 transitions. [2023-11-29 00:30:34,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.304347826086956) internal successors, (244), 47 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 5010 transitions. [2023-11-29 00:30:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-11-29 00:30:34,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:34,277 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 45, 29, 28, 28, 28, 1, 1, 1] [2023-11-29 00:30:34,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:30:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:34,477 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:30:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 975618907, now seen corresponding path program 13 times [2023-11-29 00:30:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010036801] [2023-11-29 00:30:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 0 proven. 4713 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2023-11-29 00:30:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010036801] [2023-11-29 00:30:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010036801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786661486] [2023-11-29 00:30:35,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:30:35,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:35,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:35,235 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:35,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:30:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:35,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 00:30:35,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 2434 proven. 3339 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 00:30:36,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 2311 proven. 3462 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 00:30:37,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786661486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:37,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:37,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35, 35] total 82 [2023-11-29 00:30:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277074366] [2023-11-29 00:30:37,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-11-29 00:30:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-11-29 00:30:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=5768, Unknown=0, NotChecked=0, Total=6642 [2023-11-29 00:30:37,457 INFO L87 Difference]: Start difference. First operand 4384 states and 5010 transitions. Second operand has 82 states, 82 states have (on average 5.682926829268292) internal successors, (466), 82 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:03,473 INFO L93 Difference]: Finished difference Result 8896 states and 10114 transitions. [2023-11-29 00:31:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 433 states. [2023-11-29 00:31:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 5.682926829268292) internal successors, (466), 82 states have internal predecessors, (466), 0 states have call successors, (0), 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 253 [2023-11-29 00:31:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:03,486 INFO L225 Difference]: With dead ends: 8896 [2023-11-29 00:31:03,486 INFO L226 Difference]: Without dead ends: 7350 [2023-11-29 00:31:03,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 439 SyntacticMatches, 11 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101137 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=23910, Invalid=235680, Unknown=0, NotChecked=0, Total=259590 [2023-11-29 00:31:03,500 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2042 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6576 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 6576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:03,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 1 Invalid, 7475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 6576 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 00:31:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2023-11-29 00:31:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 5266. [2023-11-29 00:31:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 1.1301044634377968) internal successors, (5950), 5265 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 5950 transitions. [2023-11-29 00:31:07,427 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 5950 transitions. Word has length 253 [2023-11-29 00:31:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:07,427 INFO L495 AbstractCegarLoop]: Abstraction has 5266 states and 5950 transitions. [2023-11-29 00:31:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 5.682926829268292) internal successors, (466), 82 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 5950 transitions. [2023-11-29 00:31:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 00:31:07,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:07,434 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 29, 28, 28, 28, 1, 1, 1] [2023-11-29 00:31:07,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:31:07,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:07,634 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:31:07,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -909176031, now seen corresponding path program 14 times [2023-11-29 00:31:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727324285] [2023-11-29 00:31:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 1325 proven. 92 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-11-29 00:31:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727324285] [2023-11-29 00:31:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727324285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965730303] [2023-11-29 00:31:07,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:31:07,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:07,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:07,917 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:07,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:31:08,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:31:08,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:31:08,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 00:31:08,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 2342 proven. 3737 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-29 00:31:09,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 2235 proven. 3844 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-29 00:31:09,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965730303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:09,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:31:09,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 35, 35] total 67 [2023-11-29 00:31:09,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228827708] [2023-11-29 00:31:09,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:09,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-29 00:31:09,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:09,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-29 00:31:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=3784, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 00:31:09,992 INFO L87 Difference]: Start difference. First operand 5266 states and 5950 transitions. Second operand has 67 states, 67 states have (on average 5.134328358208955) internal successors, (344), 67 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:56,481 INFO L93 Difference]: Finished difference Result 11315 states and 12875 transitions. [2023-11-29 00:31:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 684 states. [2023-11-29 00:31:56,481 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.134328358208955) internal successors, (344), 67 states have internal predecessors, (344), 0 states have call successors, (0), 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 259 [2023-11-29 00:31:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:56,493 INFO L225 Difference]: With dead ends: 11315 [2023-11-29 00:31:56,493 INFO L226 Difference]: Without dead ends: 8542 [2023-11-29 00:31:56,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 462 SyntacticMatches, 13 SemanticMatches, 735 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240662 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=73754, Invalid=468678, Unknown=0, NotChecked=0, Total=542432 [2023-11-29 00:31:56,531 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 608 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 5756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:56,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 2 Invalid, 5756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 00:31:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8542 states. [2023-11-29 00:32:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8542 to 6588. [2023-11-29 00:32:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6588 states, 6587 states have (on average 1.137391832397146) internal successors, (7492), 6587 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 7492 transitions. [2023-11-29 00:32:03,154 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 7492 transitions. Word has length 259 [2023-11-29 00:32:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:03,154 INFO L495 AbstractCegarLoop]: Abstraction has 6588 states and 7492 transitions. [2023-11-29 00:32:03,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.134328358208955) internal successors, (344), 67 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 7492 transitions. [2023-11-29 00:32:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-29 00:32:03,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:03,161 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 32, 31, 31, 31, 1, 1, 1] [2023-11-29 00:32:03,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:32:03,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:32:03,362 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:32:03,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1968891529, now seen corresponding path program 15 times [2023-11-29 00:32:03,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376303616] [2023-11-29 00:32:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:03,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 0 proven. 5652 refuted. 0 times theorem prover too weak. 2794 trivial. 0 not checked. [2023-11-29 00:32:03,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376303616] [2023-11-29 00:32:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376303616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:32:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705685479] [2023-11-29 00:32:03,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:32:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:03,949 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:03,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:32:04,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-29 00:32:04,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:04,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:32:04,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 2292 proven. 204 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2023-11-29 00:32:04,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 2292 proven. 204 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2023-11-29 00:32:04,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705685479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:32:04,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:32:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 51 [2023-11-29 00:32:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943545234] [2023-11-29 00:32:04,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 00:32:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 00:32:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2297, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 00:32:04,843 INFO L87 Difference]: Start difference. First operand 6588 states and 7492 transitions. Second operand has 52 states, 51 states have (on average 4.215686274509804) internal successors, (215), 52 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:56,786 INFO L93 Difference]: Finished difference Result 45479 states and 53186 transitions. [2023-11-29 00:33:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 539 states. [2023-11-29 00:33:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.215686274509804) internal successors, (215), 52 states have internal predecessors, (215), 0 states have call successors, (0), 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 298 [2023-11-29 00:33:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:56,834 INFO L225 Difference]: With dead ends: 45479 [2023-11-29 00:33:56,835 INFO L226 Difference]: Without dead ends: 45478 [2023-11-29 00:33:56,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 582 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164901 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=58597, Invalid=281875, Unknown=0, NotChecked=0, Total=340472 [2023-11-29 00:33:56,858 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 2524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2524 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:56,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 1 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2524 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 00:33:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45478 states. [2023-11-29 00:34:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45478 to 16618. [2023-11-29 00:34:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16618 states, 16617 states have (on average 1.1682614190287055) internal successors, (19413), 16617 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16618 states to 16618 states and 19413 transitions. [2023-11-29 00:34:17,637 INFO L78 Accepts]: Start accepts. Automaton has 16618 states and 19413 transitions. Word has length 298 [2023-11-29 00:34:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:17,638 INFO L495 AbstractCegarLoop]: Abstraction has 16618 states and 19413 transitions. [2023-11-29 00:34:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.215686274509804) internal successors, (215), 52 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16618 states and 19413 transitions. [2023-11-29 00:34:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-29 00:34:17,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:17,658 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 37, 36, 36, 36, 1, 1, 1] [2023-11-29 00:34:17,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:34:17,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:34:17,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:34:17,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1879779045, now seen corresponding path program 16 times [2023-11-29 00:34:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:17,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572092345] [2023-11-29 00:34:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:17,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10026 backedges. 0 proven. 7130 refuted. 0 times theorem prover too weak. 2896 trivial. 0 not checked. [2023-11-29 00:34:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572092345] [2023-11-29 00:34:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572092345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:34:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359726398] [2023-11-29 00:34:18,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:34:18,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:18,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:34:18,815 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:34:18,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:34:18,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:34:18,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:34:18,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 00:34:18,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:34:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10026 backedges. 3201 proven. 6633 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 00:34:20,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:34:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10026 backedges. 3062 proven. 6772 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 00:34:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359726398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:34:21,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:34:21,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 43, 43] total 94 [2023-11-29 00:34:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798464028] [2023-11-29 00:34:21,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:34:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-11-29 00:34:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:21,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-11-29 00:34:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1117, Invalid=7625, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 00:34:21,895 INFO L87 Difference]: Start difference. First operand 16618 states and 19413 transitions. Second operand has 94 states, 94 states have (on average 5.851063829787234) internal successors, (550), 94 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:27,405 INFO L93 Difference]: Finished difference Result 34117 states and 39711 transitions. [2023-11-29 00:35:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 471 states. [2023-11-29 00:35:27,406 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 5.851063829787234) internal successors, (550), 94 states have internal predecessors, (550), 0 states have call successors, (0), 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 327 [2023-11-29 00:35:27,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:27,439 INFO L225 Difference]: With dead ends: 34117 [2023-11-29 00:35:27,439 INFO L226 Difference]: Without dead ends: 28805 [2023-11-29 00:35:27,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 571 SyntacticMatches, 17 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121810 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=25984, Invalid=287056, Unknown=0, NotChecked=0, Total=313040 [2023-11-29 00:35:27,458 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1603 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6423 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 6423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:27,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 6423 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 00:35:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28805 states. [2023-11-29 00:35:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28805 to 17789. [2023-11-29 00:35:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17789 states, 17788 states have (on average 1.1657297054193838) internal successors, (20736), 17788 states have internal predecessors, (20736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17789 states to 17789 states and 20736 transitions. [2023-11-29 00:35:51,615 INFO L78 Accepts]: Start accepts. Automaton has 17789 states and 20736 transitions. Word has length 327 [2023-11-29 00:35:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:51,615 INFO L495 AbstractCegarLoop]: Abstraction has 17789 states and 20736 transitions. [2023-11-29 00:35:51,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 5.851063829787234) internal successors, (550), 94 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17789 states and 20736 transitions. [2023-11-29 00:35:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-11-29 00:35:51,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:51,639 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1] [2023-11-29 00:35:51,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:35:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:35:51,840 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:35:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:35:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -954720491, now seen corresponding path program 17 times [2023-11-29 00:35:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:35:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532583781] [2023-11-29 00:35:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:35:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:35:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 00:35:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532583781] [2023-11-29 00:35:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532583781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:35:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290337313] [2023-11-29 00:35:53,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:35:53,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:35:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:35:53,550 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:35:53,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9afe9bb3-a0c4-44e5-a667-b6c81b60c3f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:35:53,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2023-11-29 00:35:53,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:35:53,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:35:53,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:35:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 00:35:54,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:35:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 00:35:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290337313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:35:56,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:35:56,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2023-11-29 00:35:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47184088] [2023-11-29 00:35:56,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:35:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-11-29 00:35:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-11-29 00:35:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4686, Invalid=6234, Unknown=0, NotChecked=0, Total=10920 [2023-11-29 00:35:56,693 INFO L87 Difference]: Start difference. First operand 17789 states and 20736 transitions. Second operand has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)