./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:55:29,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:55:29,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:55:29,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:55:29,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:55:29,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:55:29,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:55:29,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:55:29,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:55:29,347 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:55:29,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:55:29,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:55:29,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:55:29,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:55:29,350 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:55:29,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:55:29,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:55:29,352 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:55:29,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:55:29,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:55:29,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:55:29,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:55:29,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:55:29,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:55:29,356 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:55:29,356 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:55:29,357 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:55:29,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:55:29,358 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:55:29,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:55:29,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:55:29,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:55:29,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:55:29,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:29,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:55:29,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:55:29,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:55:29,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:55:29,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:55:29,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:55:29,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:55:29,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:55:29,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:55:29,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:55:29,363 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_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a [2023-11-28 23:55:29,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:55:29,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:55:29,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:55:29,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:55:29,627 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:55:29,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2023-11-28 23:55:32,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:55:32,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:55:32,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2023-11-28 23:55:32,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/data/d78913609/15bf1dea9f0446bfbbeed907d8d3b3a3/FLAG2be9debae [2023-11-28 23:55:32,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/data/d78913609/15bf1dea9f0446bfbbeed907d8d3b3a3 [2023-11-28 23:55:32,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:55:32,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:55:32,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:32,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:55:32,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:55:32,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd88180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32, skipping insertion in model container [2023-11-28 23:55:32,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,709 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:55:32,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,861 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:55:32,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,887 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:55:32,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32 WrapperNode [2023-11-28 23:55:32,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:32,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:55:32,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:55:32,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,915 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2023-11-28 23:55:32,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:55:32,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:55:32,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,941 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 23:55:32,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:55:32,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:55:32,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:55:32,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:32,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:32,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:55:33,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:55:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:55:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:55:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:55:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:55:33,101 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:55:33,103 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:55:33,215 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:55:33,240 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:55:33,240 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:55:33,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:33 BoogieIcfgContainer [2023-11-28 23:55:33,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:55:33,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:55:33,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:55:33,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:55:33,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:55:32" (1/3) ... [2023-11-28 23:55:33,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37124ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:33, skipping insertion in model container [2023-11-28 23:55:33,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (2/3) ... [2023-11-28 23:55:33,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37124ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:33, skipping insertion in model container [2023-11-28 23:55:33,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:33" (3/3) ... [2023-11-28 23:55:33,252 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.i [2023-11-28 23:55:33,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:55:33,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 23:55:33,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:55:33,321 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@670bb3a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:55:33,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-28 23:55:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-28 23:55:33,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-28 23:55:33,331 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)] === [2023-11-28 23:55:33,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2023-11-28 23:55:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106582368] [2023-11-28 23:55:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106582368] [2023-11-28 23:55:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106582368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718832236] [2023-11-28 23:55:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:33,599 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,653 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2023-11-28 23:55:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-28 23:55:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,663 INFO L225 Difference]: With dead ends: 33 [2023-11-28 23:55:33,663 INFO L226 Difference]: Without dead ends: 14 [2023-11-28 23:55:33,666 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 [2023-11-28 23:55:33,670 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-28 23:55:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-11-28 23:55:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-28 23:55:33,697 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2023-11-28 23:55:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,698 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-28 23:55:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-28 23:55:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-28 23:55:33,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:55:33,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:55:33,700 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)] === [2023-11-28 23:55:33,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2023-11-28 23:55:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505653678] [2023-11-28 23:55:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505653678] [2023-11-28 23:55:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505653678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709412835] [2023-11-28 23:55:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:33,759 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. 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) [2023-11-28 23:55:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,779 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-28 23:55:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:33,779 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 [2023-11-28 23:55:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,780 INFO L225 Difference]: With dead ends: 15 [2023-11-28 23:55:33,780 INFO L226 Difference]: Without dead ends: 14 [2023-11-28 23:55:33,781 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 [2023-11-28 23:55:33,782 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-28 23:55:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-28 23:55:33,787 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) [2023-11-28 23:55:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-28 23:55:33,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2023-11-28 23:55:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,788 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-28 23:55:33,788 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) [2023-11-28 23:55:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-28 23:55:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 23:55:33,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:55:33,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:55:33,789 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)] === [2023-11-28 23:55:33,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2023-11-28 23:55:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794751810] [2023-11-28 23:55:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794751810] [2023-11-28 23:55:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794751810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509112393] [2023-11-28 23:55:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:33,850 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2023-11-28 23:55:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,887 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-28 23:55:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2023-11-28 23:55:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,889 INFO L225 Difference]: With dead ends: 14 [2023-11-28 23:55:33,889 INFO L226 Difference]: Without dead ends: 13 [2023-11-28 23:55:33,889 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 [2023-11-28 23:55:33,891 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-28 23:55:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-28 23:55:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-28 23:55:33,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2023-11-28 23:55:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,896 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-28 23:55:33,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2023-11-28 23:55:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-28 23:55:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-28 23:55:33,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:55:33,897 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)] === [2023-11-28 23:55:33,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2023-11-28 23:55:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413222893] [2023-11-28 23:55:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413222893] [2023-11-28 23:55:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413222893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483242852] [2023-11-28 23:55:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:33,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:33,955 INFO L87 Difference]: Start difference. First operand 13 states and 13 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) [2023-11-28 23:55:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,989 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-28 23:55:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:33,990 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 [2023-11-28 23:55:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,991 INFO L225 Difference]: With dead ends: 16 [2023-11-28 23:55:33,991 INFO L226 Difference]: Without dead ends: 15 [2023-11-28 23:55:33,992 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 [2023-11-28 23:55:33,993 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-28 23:55:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-28 23:55:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) 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) [2023-11-28 23:55:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-28 23:55:33,998 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2023-11-28 23:55:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,999 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-28 23:55:33,999 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) [2023-11-28 23:55:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-28 23:55:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-28 23:55:34,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,000 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:55:34,001 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)] === [2023-11-28 23:55:34,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,001 INFO L85 PathProgramCache]: Analyzing trace with hash -570638597, now seen corresponding path program 1 times [2023-11-28 23:55:34,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194099695] [2023-11-28 23:55:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194099695] [2023-11-28 23:55:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194099695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086132526] [2023-11-28 23:55:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:34,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:34,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:55:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:55:34,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:34,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086132526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:34,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-28 23:55:34,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105207223] [2023-11-28 23:55:34,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:55:34,253 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,300 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-28 23:55:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:34,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-28 23:55:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,301 INFO L225 Difference]: With dead ends: 15 [2023-11-28 23:55:34,301 INFO L226 Difference]: Without dead ends: 14 [2023-11-28 23:55:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:55:34,303 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 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 [2023-11-28 23:55:34,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-28 23:55:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-28 23:55:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) 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) [2023-11-28 23:55:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-28 23:55:34,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2023-11-28 23:55:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:34,308 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-28 23:55:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-28 23:55:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-28 23:55:34,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:34,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:34,512 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)] === [2023-11-28 23:55:34,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -509927273, now seen corresponding path program 1 times [2023-11-28 23:55:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13194094] [2023-11-28 23:55:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13194094] [2023-11-28 23:55:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13194094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503614061] [2023-11-28 23:55:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:34,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:34,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:55:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:55:34,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503614061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:34,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 23:55:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340385661] [2023-11-28 23:55:34,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:55:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:55:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:55:34,767 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,849 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-28 23:55:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:55:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-28 23:55:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,850 INFO L225 Difference]: With dead ends: 24 [2023-11-28 23:55:34,850 INFO L226 Difference]: Without dead ends: 23 [2023-11-28 23:55:34,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:55:34,852 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-28 23:55:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-28 23:55:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-28 23:55:34,857 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2023-11-28 23:55:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:34,857 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-28 23:55:34,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-11-28 23:55:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-28 23:55:34,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 23:55:34,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:55:35,064 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)] === [2023-11-28 23:55:35,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -413835943, now seen corresponding path program 1 times [2023-11-28 23:55:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258734342] [2023-11-28 23:55:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258734342] [2023-11-28 23:55:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258734342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123164237] [2023-11-28 23:55:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:35,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:35,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:55:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:35,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123164237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:35,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:35,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-28 23:55:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306020887] [2023-11-28 23:55:35,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:35,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:55:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:55:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:55:35,239 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:35,318 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-28 23:55:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:55:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 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 12 [2023-11-28 23:55:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:35,319 INFO L225 Difference]: With dead ends: 31 [2023-11-28 23:55:35,319 INFO L226 Difference]: Without dead ends: 30 [2023-11-28 23:55:35,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:55:35,321 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:35,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-28 23:55:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-11-28 23:55:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-11-28 23:55:35,326 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 12 [2023-11-28 23:55:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,327 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-11-28 23:55:35,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-11-28 23:55:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 23:55:35,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1] [2023-11-28 23:55:35,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:55:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 23:55:35,529 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)] === [2023-11-28 23:55:35,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash 408712343, now seen corresponding path program 2 times [2023-11-28 23:55:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762916973] [2023-11-28 23:55:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762916973] [2023-11-28 23:55:35,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762916973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114829552] [2023-11-28 23:55:35,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:35,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:55:35,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:55:35,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:35,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:55:35,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114829552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:36,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:36,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-28 23:55:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157542318] [2023-11-28 23:55:36,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:55:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:55:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:55:36,144 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:36,539 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-28 23:55:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:55:36,539 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 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 20 [2023-11-28 23:55:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:36,540 INFO L225 Difference]: With dead ends: 45 [2023-11-28 23:55:36,540 INFO L226 Difference]: Without dead ends: 44 [2023-11-28 23:55:36,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2023-11-28 23:55:36,542 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 30 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-28 23:55:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-11-28 23:55:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-11-28 23:55:36,549 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 20 [2023-11-28 23:55:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:36,550 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-11-28 23:55:36,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-11-28 23:55:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-28 23:55:36,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:36,551 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1] [2023-11-28 23:55:36,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:36,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 23:55:36,761 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)] === [2023-11-28 23:55:36,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1943210873, now seen corresponding path program 2 times [2023-11-28 23:55:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130986414] [2023-11-28 23:55:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130986414] [2023-11-28 23:55:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130986414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826104515] [2023-11-28 23:55:36,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:36,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:36,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:36,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:55:36,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:55:36,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:36,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:55:36,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-28 23:55:37,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-28 23:55:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826104515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:37,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:37,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2023-11-28 23:55:37,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848888260] [2023-11-28 23:55:37,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:55:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:55:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:55:37,091 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:37,287 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-11-28 23:55:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:55:37,287 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-28 23:55:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:37,288 INFO L225 Difference]: With dead ends: 42 [2023-11-28 23:55:37,288 INFO L226 Difference]: Without dead ends: 41 [2023-11-28 23:55:37,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:55:37,290 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:37,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-28 23:55:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-28 23:55:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2023-11-28 23:55:37,296 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 27 [2023-11-28 23:55:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:37,296 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2023-11-28 23:55:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2023-11-28 23:55:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-28 23:55:37,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:37,297 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1] [2023-11-28 23:55:37,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:37,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 23:55:37,500 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)] === [2023-11-28 23:55:37,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 424942743, now seen corresponding path program 3 times [2023-11-28 23:55:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540893899] [2023-11-28 23:55:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:37,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540893899] [2023-11-28 23:55:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540893899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:37,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104194642] [2023-11-28 23:55:37,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:55:37,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:37,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:37,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:37,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:55:37,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-28 23:55:37,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:37,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:55:37,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:38,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104194642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:39,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-11-28 23:55:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455638708] [2023-11-28 23:55:39,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-28 23:55:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-28 23:55:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2023-11-28 23:55:39,381 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 47 states, 46 states have (on average 2.5652173913043477) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:42,556 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2023-11-28 23:55:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-28 23:55:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5652173913043477) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 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 40 [2023-11-28 23:55:42,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:42,558 INFO L225 Difference]: With dead ends: 82 [2023-11-28 23:55:42,558 INFO L226 Difference]: Without dead ends: 81 [2023-11-28 23:55:42,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1266, Invalid=6044, Unknown=0, NotChecked=0, Total=7310 [2023-11-28 23:55:42,562 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:55:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-28 23:55:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-28 23:55:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2023-11-28 23:55:42,575 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 40 [2023-11-28 23:55:42,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:42,576 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2023-11-28 23:55:42,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5652173913043477) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2023-11-28 23:55:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:55:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:42,580 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1] [2023-11-28 23:55:42,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:42,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:55:42,784 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)] === [2023-11-28 23:55:42,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash -199791465, now seen corresponding path program 4 times [2023-11-28 23:55:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557715318] [2023-11-28 23:55:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557715318] [2023-11-28 23:55:44,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557715318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200284391] [2023-11-28 23:55:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 23:55:44,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:44,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:44,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:55:44,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 23:55:44,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:44,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-28 23:55:44,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:45,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200284391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:47,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:47,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-11-28 23:55:47,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834130037] [2023-11-28 23:55:47,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-11-28 23:55:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-11-28 23:55:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=8020, Unknown=0, NotChecked=0, Total=8930 [2023-11-28 23:55:47,285 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 95 states, 94 states have (on average 2.5319148936170213) internal successors, (238), 95 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:53,506 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2023-11-28 23:55:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-28 23:55:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.5319148936170213) internal successors, (238), 95 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-28 23:55:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:53,509 INFO L225 Difference]: With dead ends: 162 [2023-11-28 23:55:53,509 INFO L226 Difference]: Without dead ends: 161 [2023-11-28 23:55:53,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4197 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3904, Invalid=19966, Unknown=0, NotChecked=0, Total=23870 [2023-11-28 23:55:53,516 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 197 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:53,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 3 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 23:55:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-28 23:55:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-28 23:55:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2023-11-28 23:55:53,535 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 80 [2023-11-28 23:55:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:53,536 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2023-11-28 23:55:53,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.5319148936170213) internal successors, (238), 95 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2023-11-28 23:55:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-28 23:55:53,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:53,539 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1, 1] [2023-11-28 23:55:53,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:53,740 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)] === [2023-11-28 23:55:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -454161257, now seen corresponding path program 5 times [2023-11-28 23:55:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486250301] [2023-11-28 23:55:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486250301] [2023-11-28 23:55:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486250301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610762262] [2023-11-28 23:55:57,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 23:55:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:57,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:57,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:55:57,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-11-28 23:55:57,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:57,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-28 23:55:57,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:02,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610762262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:08,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 190 [2023-11-28 23:56:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176484611] [2023-11-28 23:56:08,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:08,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-11-28 23:56:08,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-11-28 23:56:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3358, Invalid=32932, Unknown=0, NotChecked=0, Total=36290 [2023-11-28 23:56:08,386 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 191 states, 190 states have (on average 2.5157894736842104) internal successors, (478), 191 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:38,633 INFO L93 Difference]: Finished difference Result 322 states and 353 transitions. [2023-11-28 23:56:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-28 23:56:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.5157894736842104) internal successors, (478), 191 states have internal predecessors, (478), 0 states have call successors, (0), 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 160 [2023-11-28 23:56:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:38,636 INFO L225 Difference]: With dead ends: 322 [2023-11-28 23:56:38,636 INFO L226 Difference]: Without dead ends: 321 [2023-11-28 23:56:38,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17853 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=14960, Invalid=83950, Unknown=0, NotChecked=0, Total=98910 [2023-11-28 23:56:38,646 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 803 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13506 mSolverCounterSat, 800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 13506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:38,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 3 Invalid, 14306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 13506 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-28 23:56:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-28 23:56:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-11-28 23:56:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.003125) internal successors, (321), 320 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2023-11-28 23:56:38,679 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 160 [2023-11-28 23:56:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:38,680 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2023-11-28 23:56:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.5157894736842104) internal successors, (478), 191 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2023-11-28 23:56:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-28 23:56:38,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:38,688 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 1, 1, 1] [2023-11-28 23:56:38,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:38,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:56:38,894 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)] === [2023-11-28 23:56:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1943751831, now seen corresponding path program 6 times [2023-11-28 23:56:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:38,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168117264] [2023-11-28 23:56:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:38,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168117264] [2023-11-28 23:56:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168117264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918841512] [2023-11-28 23:56:51,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-28 23:56:51,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:51,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:51,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:56:51,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2023-11-28 23:56:51,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:51,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-28 23:56:52,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:57:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:10,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:57:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 9954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918841512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:57:42,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:57:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 382 [2023-11-28 23:57:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795019635] [2023-11-28 23:57:42,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:57:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 383 states [2023-11-28 23:57:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 383 interpolants. [2023-11-28 23:57:42,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10294, Invalid=136012, Unknown=0, NotChecked=0, Total=146306 [2023-11-28 23:57:42,799 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand has 383 states, 382 states have (on average 2.507853403141361) internal successors, (958), 383 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:08:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:08:48,933 INFO L93 Difference]: Finished difference Result 642 states and 705 transitions. [2023-11-29 00:08:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 344 states. [2023-11-29 00:08:48,935 INFO L78 Accepts]: Start accepts. Automaton has has 383 states, 382 states have (on average 2.507853403141361) internal successors, (958), 383 states have internal predecessors, (958), 0 states have call successors, (0), 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 320 [2023-11-29 00:08:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:08:48,938 INFO L225 Difference]: With dead ends: 642 [2023-11-29 00:08:48,938 INFO L226 Difference]: Without dead ends: 641 [2023-11-29 00:08:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 720 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106790 ImplicationChecksByTransitivity, 694.1s TimeCoverageRelationStatistics Valid=82342, Invalid=438220, Unknown=0, NotChecked=0, Total=520562 [2023-11-29 00:08:48,965 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5310 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50346 mSolverCounterSat, 4727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5310 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4727 IncrementalHoareTripleChecker+Valid, 50346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:08:48,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5310 Valid, 2 Invalid, 55073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4727 Valid, 50346 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2023-11-29 00:08:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-29 00:08:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2023-11-29 00:08:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.0015625) internal successors, (641), 640 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:08:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 641 transitions. [2023-11-29 00:08:49,066 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 641 transitions. Word has length 320 [2023-11-29 00:08:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:08:49,066 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 641 transitions. [2023-11-29 00:08:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 383 states, 382 states have (on average 2.507853403141361) internal successors, (958), 383 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:08:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 641 transitions. [2023-11-29 00:08:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-11-29 00:08:49,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:08:49,078 INFO L195 NwaCegarLoop]: trace histogram [128, 128, 127, 127, 127, 1, 1, 1] [2023-11-29 00:08:49,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:08:49,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:08:49,279 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-29 00:08:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:08:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1186319511, now seen corresponding path program 7 times [2023-11-29 00:08:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:08:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449058796] [2023-11-29 00:08:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:08:49,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:08:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 40386 backedges. 0 proven. 40386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:51,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:51,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449058796] [2023-11-29 00:09:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449058796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:09:51,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071880108] [2023-11-29 00:09:51,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:09:51,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:09:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:09:51,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:09:51,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f0567-6242-4a90-b207-eb45acb9b2d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:09:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:51,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 203 conjunts are in the unsatisfiable core [2023-11-29 00:09:51,275 INFO L285 TraceCheckSpWp]: Computing forward predicates...