./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:55:55,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:55:55,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:55:55,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:55:55,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:55:55,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:55:55,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:55:55,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:55:55,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:55:55,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:55:55,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:55:55,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:55:55,477 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:55:55,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:55:55,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:55:55,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:55:55,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:55:55,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:55:55,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:55:55,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:55:55,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:55:55,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:55:55,483 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:55:55,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:55:55,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:55:55,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:55:55,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:55:55,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:55:55,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:55:55,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:55:55,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:55,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:55:55,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:55:55,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:55:55,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:55:55,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:55:55,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:55:55,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:55:55,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:55:55,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:55:55,495 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:55:55,496 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_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd [2023-11-06 22:55:55,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:55:55,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:55:55,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:55:55,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:55:55,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:55:55,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2023-11-06 22:55:58,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:55:59,068 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:55:59,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2023-11-06 22:55:59,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/data/53ac95585/0d9165842ab3499ba1c171d96d6816ab/FLAG695673cd5 [2023-11-06 22:55:59,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/data/53ac95585/0d9165842ab3499ba1c171d96d6816ab [2023-11-06 22:55:59,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:55:59,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:55:59,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:59,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:55:59,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:55:59,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716c1dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59, skipping insertion in model container [2023-11-06 22:55:59,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:55:59,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:59,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:55:59,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:59,361 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:55:59,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59 WrapperNode [2023-11-06 22:55:59,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:59,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:59,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:55:59,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:55:59,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,402 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2023-11-06 22:55:59,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:59,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:55:59,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:55:59,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:55:59,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:55:59,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:55:59,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:55:59,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:55:59,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (1/1) ... [2023-11-06 22:55:59,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:59,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:59,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:55:59,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:55:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:55:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:55:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:55:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:55:59,615 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:55:59,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:55:59,770 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:55:59,776 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:55:59,777 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:55:59,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:59 BoogieIcfgContainer [2023-11-06 22:55:59,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:55:59,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:55:59,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:55:59,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:55:59,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:59" (1/3) ... [2023-11-06 22:55:59,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfbb840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:59, skipping insertion in model container [2023-11-06 22:55:59,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:59" (2/3) ... [2023-11-06 22:55:59,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfbb840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:59, skipping insertion in model container [2023-11-06 22:55:59,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:59" (3/3) ... [2023-11-06 22:55:59,799 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark08_conjunctive.i [2023-11-06 22:55:59,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:55:59,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:55:59,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:59,882 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=LoopsAndPotentialCycles, 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;@10960e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:59,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:55:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:55:59,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:59,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:55:59,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:55:59,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2023-11-06 22:55:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614511971] [2023-11-06 22:55:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614511971] [2023-11-06 22:56:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614511971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:56:00,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112643907] [2023-11-06 22:56:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:00,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:00,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:56:00,261 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-06 22:56:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,317 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2023-11-06 22:56:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2023-11-06 22:56:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,327 INFO L225 Difference]: With dead ends: 36 [2023-11-06 22:56:00,327 INFO L226 Difference]: Without dead ends: 15 [2023-11-06 22:56:00,330 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 [2023-11-06 22:56:00,334 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:00,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-06 22:56:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-06 22:56:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 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) [2023-11-06 22:56:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-06 22:56:00,383 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2023-11-06 22:56:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:00,383 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-06 22:56:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-06 22:56:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-06 22:56:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:56:00,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:00,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:56:00,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:56:00,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:56:00,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2023-11-06 22:56:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062499825] [2023-11-06 22:56:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062499825] [2023-11-06 22:56:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062499825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:00,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:56:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221827709] [2023-11-06 22:56:00,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:00,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:00,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:56:00,468 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2023-11-06 22:56:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,491 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-06 22:56:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2023-11-06 22:56:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,495 INFO L225 Difference]: With dead ends: 16 [2023-11-06 22:56:00,495 INFO L226 Difference]: Without dead ends: 15 [2023-11-06 22:56:00,501 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 [2023-11-06 22:56:00,503 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 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 [2023-11-06 22:56:00,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-06 22:56:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-06 22:56:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 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) [2023-11-06 22:56:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-06 22:56:00,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2023-11-06 22:56:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-06 22:56:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2023-11-06 22:56:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-06 22:56:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:56:00,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:00,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:56:00,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:56:00,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2023-11-06 22:56:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371953080] [2023-11-06 22:56:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371953080] [2023-11-06 22:56:00,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371953080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:00,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:56:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661503293] [2023-11-06 22:56:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:00,616 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,655 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-06 22:56:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:56:00,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-06 22:56:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,657 INFO L225 Difference]: With dead ends: 15 [2023-11-06 22:56:00,657 INFO L226 Difference]: Without dead ends: 14 [2023-11-06 22:56:00,657 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 [2023-11-06 22:56:00,659 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-06 22:56:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-06 22:56:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 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) [2023-11-06 22:56:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-06 22:56:00,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2023-11-06 22:56:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:00,665 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-06 22:56:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-06 22:56:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:56:00,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:00,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:56:00,667 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)] === [2023-11-06 22:56:00,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2023-11-06 22:56:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174824755] [2023-11-06 22:56:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174824755] [2023-11-06 22:56:00,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174824755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:00,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:00,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:56:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977764707] [2023-11-06 22:56:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:56:00,730 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,765 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-06 22:56:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:56:00,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-06 22:56:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,766 INFO L225 Difference]: With dead ends: 17 [2023-11-06 22:56:00,766 INFO L226 Difference]: Without dead ends: 16 [2023-11-06 22:56:00,767 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 [2023-11-06 22:56:00,768 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:00,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-06 22:56:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-06 22:56:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 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) [2023-11-06 22:56:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-06 22:56:00,774 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2023-11-06 22:56:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:00,774 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-06 22:56:00,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-06 22:56:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:56:00,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:00,776 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:56:00,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:56:00,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2023-11-06 22:56:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484452480] [2023-11-06 22:56:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484452480] [2023-11-06 22:56:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484452480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853841325] [2023-11-06 22:56:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:00,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:00,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:00,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:56:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:01,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:56:01,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:01,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853841325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:01,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:56:01,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-06 22:56:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081397283] [2023-11-06 22:56:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:01,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:56:01,175 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:01,238 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-06 22:56:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 22:56:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:01,240 INFO L225 Difference]: With dead ends: 16 [2023-11-06 22:56:01,240 INFO L226 Difference]: Without dead ends: 15 [2023-11-06 22:56:01,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:56:01,242 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:01,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:56:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-06 22:56:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-06 22:56:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 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) [2023-11-06 22:56:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-06 22:56:01,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2023-11-06 22:56:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:01,247 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-06 22:56:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-06 22:56:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:56:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:01,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:01,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:56:01,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:01,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:56:01,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2023-11-06 22:56:01,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:01,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870398547] [2023-11-06 22:56:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:01,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870398547] [2023-11-06 22:56:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870398547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629578712] [2023-11-06 22:56:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:01,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:01,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:01,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:56:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:01,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:56:01,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:01,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629578712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:01,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-06 22:56:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902986370] [2023-11-06 22:56:01,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:56:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:56:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:56:01,867 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:01,955 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2023-11-06 22:56:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:56:01,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 22:56:01,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:01,957 INFO L225 Difference]: With dead ends: 25 [2023-11-06 22:56:01,957 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 22:56:01,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:56:01,959 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:01,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:56:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 22:56:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-11-06 22:56:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-06 22:56:01,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2023-11-06 22:56:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:01,965 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-06 22:56:01,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-06 22:56:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:56:01,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:01,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:56:01,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:02,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:56:02,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:56:02,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2023-11-06 22:56:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:02,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388151184] [2023-11-06 22:56:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:02,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388151184] [2023-11-06 22:56:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388151184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935273458] [2023-11-06 22:56:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:02,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:02,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:02,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:02,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:56:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:56:02,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:02,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935273458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:02,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-06 22:56:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934486547] [2023-11-06 22:56:02,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:02,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:56:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:56:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:56:02,410 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:02,517 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-06 22:56:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:56:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:56:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:02,519 INFO L225 Difference]: With dead ends: 32 [2023-11-06 22:56:02,519 INFO L226 Difference]: Without dead ends: 31 [2023-11-06 22:56:02,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:56:02,520 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:02,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 13 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:56:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-06 22:56:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-11-06 22:56:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 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) [2023-11-06 22:56:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-06 22:56:02,527 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 13 [2023-11-06 22:56:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:02,527 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-06 22:56:02,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-06 22:56:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 22:56:02,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:02,528 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 22:56:02,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:56:02,734 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)] === [2023-11-06 22:56:02,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1032298143, now seen corresponding path program 2 times [2023-11-06 22:56:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148832975] [2023-11-06 22:56:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:03,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148832975] [2023-11-06 22:56:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148832975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45295895] [2023-11-06 22:56:03,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:56:03,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:03,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:03,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:03,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:56:03,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:56:03,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:03,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:56:03,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:03,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45295895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:03,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-06 22:56:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398406812] [2023-11-06 22:56:03,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:56:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:56:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:56:03,569 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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) [2023-11-06 22:56:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:03,921 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2023-11-06 22:56:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:56:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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 21 [2023-11-06 22:56:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:03,923 INFO L225 Difference]: With dead ends: 46 [2023-11-06 22:56:03,923 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 22:56:03,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:56:03,925 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:03,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 18 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:56:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 22:56:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-11-06 22:56:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 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) [2023-11-06 22:56:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2023-11-06 22:56:03,934 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 21 [2023-11-06 22:56:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:03,935 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2023-11-06 22:56:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 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) [2023-11-06 22:56:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2023-11-06 22:56:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:56:03,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:03,936 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-11-06 22:56:03,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:56:04,143 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)] === [2023-11-06 22:56:04,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash -765261969, now seen corresponding path program 2 times [2023-11-06 22:56:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310665256] [2023-11-06 22:56:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:04,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310665256] [2023-11-06 22:56:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310665256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52099991] [2023-11-06 22:56:04,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:56:04,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:04,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:04,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:56:04,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:56:04,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:04,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:56:04,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-06 22:56:04,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-06 22:56:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52099991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:04,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2023-11-06 22:56:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452212017] [2023-11-06 22:56:04,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:56:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:56:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:56:04,492 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:04,722 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2023-11-06 22:56:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:56:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-06 22:56:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:04,725 INFO L225 Difference]: With dead ends: 43 [2023-11-06 22:56:04,725 INFO L226 Difference]: Without dead ends: 42 [2023-11-06 22:56:04,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:56:04,729 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:04,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:56:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-06 22:56:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-06 22:56:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2023-11-06 22:56:04,741 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 28 [2023-11-06 22:56:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:04,742 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2023-11-06 22:56:04,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2023-11-06 22:56:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:56:04,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:04,744 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1] [2023-11-06 22:56:04,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:56:04,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:04,950 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)] === [2023-11-06 22:56:04,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1695301535, now seen corresponding path program 3 times [2023-11-06 22:56:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787084966] [2023-11-06 22:56:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:05,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787084966] [2023-11-06 22:56:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787084966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165880792] [2023-11-06 22:56:05,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:56:05,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:05,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:05,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:05,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:56:05,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-06 22:56:05,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:05,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:56:05,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:06,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:06,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165880792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:06,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:06,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-11-06 22:56:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240119414] [2023-11-06 22:56:06,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-06 22:56:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-06 22:56:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1830, Unknown=0, NotChecked=0, Total=2162 [2023-11-06 22:56:06,578 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 47 states, 46 states have (on average 2.5869565217391304) internal successors, (119), 47 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:07,612 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2023-11-06 22:56:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 22:56:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5869565217391304) internal successors, (119), 47 states have internal predecessors, (119), 0 states have call successors, (0), 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 41 [2023-11-06 22:56:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:07,615 INFO L225 Difference]: With dead ends: 83 [2023-11-06 22:56:07,616 INFO L226 Difference]: Without dead ends: 82 [2023-11-06 22:56:07,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=892, Invalid=3530, Unknown=0, NotChecked=0, Total=4422 [2023-11-06 22:56:07,619 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 76 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:07,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 29 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:56:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-06 22:56:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-06 22:56:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2023-11-06 22:56:07,639 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 41 [2023-11-06 22:56:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:07,639 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2023-11-06 22:56:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5869565217391304) internal successors, (119), 47 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2023-11-06 22:56:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:56:07,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:07,644 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1, 1] [2023-11-06 22:56:07,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:56:07,851 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)] === [2023-11-06 22:56:07,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 477757025, now seen corresponding path program 4 times [2023-11-06 22:56:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524566924] [2023-11-06 22:56:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524566924] [2023-11-06 22:56:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524566924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714101626] [2023-11-06 22:56:09,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:56:09,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:09,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:09,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:56:09,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:56:09,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:09,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:56:09,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:11,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714101626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:13,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-11-06 22:56:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135048785] [2023-11-06 22:56:13,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-11-06 22:56:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-11-06 22:56:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=7750, Unknown=0, NotChecked=0, Total=8930 [2023-11-06 22:56:13,043 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 95 states, 94 states have (on average 2.5425531914893615) internal successors, (239), 95 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:17,619 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2023-11-06 22:56:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-06 22:56:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.5425531914893615) internal successors, (239), 95 states have internal predecessors, (239), 0 states have call successors, (0), 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 81 [2023-11-06 22:56:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:17,626 INFO L225 Difference]: With dead ends: 163 [2023-11-06 22:56:17,626 INFO L226 Difference]: Without dead ends: 162 [2023-11-06 22:56:17,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5085 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3640, Invalid=15542, Unknown=0, NotChecked=0, Total=19182 [2023-11-06 22:56:17,636 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 194 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:17,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 49 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:56:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-06 22:56:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-06 22:56:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2023-11-06 22:56:17,695 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 81 [2023-11-06 22:56:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:17,696 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2023-11-06 22:56:17,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.5425531914893615) internal successors, (239), 95 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2023-11-06 22:56:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-06 22:56:17,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:17,699 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1, 1, 1] [2023-11-06 22:56:17,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:17,900 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)] === [2023-11-06 22:56:17,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -758875551, now seen corresponding path program 5 times [2023-11-06 22:56:17,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099396876] [2023-11-06 22:56:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:22,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:22,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099396876] [2023-11-06 22:56:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099396876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:22,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278885137] [2023-11-06 22:56:22,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:56:22,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:22,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:22,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:22,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:56:22,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-11-06 22:56:22,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:22,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-06 22:56:22,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:28,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278885137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:34,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 190 [2023-11-06 22:56:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298490095] [2023-11-06 22:56:34,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-11-06 22:56:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-11-06 22:56:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4412, Invalid=31878, Unknown=0, NotChecked=0, Total=36290 [2023-11-06 22:56:34,390 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 191 states, 190 states have (on average 2.5210526315789474) internal successors, (479), 191 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:59,916 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2023-11-06 22:56:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-06 22:56:59,918 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.5210526315789474) internal successors, (479), 191 states have internal predecessors, (479), 0 states have call successors, (0), 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 161 [2023-11-06 22:56:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:59,921 INFO L225 Difference]: With dead ends: 323 [2023-11-06 22:56:59,922 INFO L226 Difference]: Without dead ends: 322 [2023-11-06 22:56:59,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21669 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=14704, Invalid=65102, Unknown=0, NotChecked=0, Total=79806 [2023-11-06 22:56:59,931 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 721 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:59,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 102 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:56:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-06 22:56:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-11-06 22:56:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.0031152647975077) internal successors, (322), 321 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2023-11-06 22:56:59,961 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 161 [2023-11-06 22:56:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:59,962 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2023-11-06 22:56:59,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.5210526315789474) internal successors, (479), 191 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2023-11-06 22:56:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-06 22:56:59,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:59,969 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 1, 1, 1, 1] [2023-11-06 22:56:59,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:00,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:00,176 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)] === [2023-11-06 22:57:00,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1806601631, now seen corresponding path program 6 times [2023-11-06 22:57:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455510162] [2023-11-06 22:57:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455510162] [2023-11-06 22:57:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455510162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473028008] [2023-11-06 22:57:16,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:57:16,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:16,160 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:16,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ad63be-9938-47fe-9e67-c51b714ddfdf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:57:16,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2023-11-06 22:57:16,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:57:16,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-06 22:57:17,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:35,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:58,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473028008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:58,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:57:58,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 382 [2023-11-06 22:57:58,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721326751] [2023-11-06 22:57:58,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 383 states [2023-11-06 22:57:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 383 interpolants. [2023-11-06 22:57:58,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=129286, Unknown=0, NotChecked=0, Total=146306 [2023-11-06 22:57:58,775 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand has 383 states, 382 states have (on average 2.5104712041884816) internal successors, (959), 383 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)