./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Primes.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme --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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:06,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:06,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:01:06,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:06,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:06,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:06,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:06,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:06,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:06,411 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:06,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:06,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:06,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:06,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:06,415 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:06,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:06,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:06,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:06,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:06,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:06,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:06,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:06,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:06,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:06,421 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:01:06,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:06,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:06,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:06,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:06,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:06,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:06,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:06,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:06,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:06,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:06,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:06,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:06,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:06,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:06,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:06,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:06,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:06,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:06,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:06,430 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_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2023-11-26 12:01:06,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:06,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:06,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:06,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:06,701 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:06,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive/Primes.c [2023-11-26 12:01:09,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:10,174 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:10,175 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/sv-benchmarks/c/recursive/Primes.c [2023-11-26 12:01:10,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/data/748d16422/93c90879e6984e128d48f07604e39bb9/FLAGe9fc51d16 [2023-11-26 12:01:10,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/data/748d16422/93c90879e6984e128d48f07604e39bb9 [2023-11-26 12:01:10,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:10,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:10,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:10,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:10,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:10,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a58d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10, skipping insertion in model container [2023-11-26 12:01:10,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:10,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:10,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:10,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:10,509 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:10,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10 WrapperNode [2023-11-26 12:01:10,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:10,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:10,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:10,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:10,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,550 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-26 12:01:10,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:10,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:10,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:10,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:10,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,581 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]. [2023-11-26 12:01:10,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:10,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:10,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:10,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:10,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (1/1) ... [2023-11-26 12:01:10,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:10,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:10,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2023-11-26 12:01:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2023-11-26 12:01:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-11-26 12:01:10,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-11-26 12:01:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2023-11-26 12:01:10,686 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2023-11-26 12:01:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:01:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:10,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:10,784 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:10,786 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:11,132 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:11,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:11,188 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:01:11,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:11 BoogieIcfgContainer [2023-11-26 12:01:11,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:11,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:11,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:11,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:11,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:10" (1/3) ... [2023-11-26 12:01:11,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6658f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:11, skipping insertion in model container [2023-11-26 12:01:11,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:10" (2/3) ... [2023-11-26 12:01:11,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6658f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:11, skipping insertion in model container [2023-11-26 12:01:11,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:11" (3/3) ... [2023-11-26 12:01:11,208 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2023-11-26 12:01:11,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:11,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-26 12:01:11,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:11,292 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;@5b77dae4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:11,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 12:01:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 50 states have (on average 1.66) internal successors, (83), 66 states have internal predecessors, (83), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:01:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:01:11,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:11,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:01:11,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:11,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 188771, now seen corresponding path program 1 times [2023-11-26 12:01:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107651631] [2023-11-26 12:01:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:11,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107651631] [2023-11-26 12:01:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107651631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:11,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795480348] [2023-11-26 12:01:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:11,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:11,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:11,594 INFO L87 Difference]: Start difference. First operand has 79 states, 50 states have (on average 1.66) internal successors, (83), 66 states have internal predecessors, (83), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:11,645 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2023-11-26 12:01:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:11,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-26 12:01:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:11,661 INFO L225 Difference]: With dead ends: 81 [2023-11-26 12:01:11,662 INFO L226 Difference]: Without dead ends: 74 [2023-11-26 12:01:11,665 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 [2023-11-26 12:01:11,671 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:11,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 184 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-26 12:01:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-26 12:01:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.574468085106383) internal successors, (74), 62 states have internal predecessors, (74), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2023-11-26 12:01:11,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 3 [2023-11-26 12:01:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:11,731 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2023-11-26 12:01:11,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2023-11-26 12:01:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 12:01:11,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:11,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 12:01:11,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:11,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:11,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 5852008, now seen corresponding path program 1 times [2023-11-26 12:01:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44513118] [2023-11-26 12:01:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44513118] [2023-11-26 12:01:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44513118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:11,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145012080] [2023-11-26 12:01:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:11,807 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. 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) [2023-11-26 12:01:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:11,833 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2023-11-26 12:01:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:11,838 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 [2023-11-26 12:01:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:11,842 INFO L225 Difference]: With dead ends: 74 [2023-11-26 12:01:11,842 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 12:01:11,842 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 [2023-11-26 12:01:11,844 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:11,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 170 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 12:01:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 12:01:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.553191489361702) internal successors, (73), 61 states have internal predecessors, (73), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2023-11-26 12:01:11,859 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 4 [2023-11-26 12:01:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:11,859 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2023-11-26 12:01:11,859 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) [2023-11-26 12:01:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2023-11-26 12:01:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:01:11,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:11,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:11,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:11,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -672310738, now seen corresponding path program 1 times [2023-11-26 12:01:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585271476] [2023-11-26 12:01:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585271476] [2023-11-26 12:01:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585271476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:11,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230755437] [2023-11-26 12:01:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:11,923 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:11,966 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2023-11-26 12:01:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 12:01:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:11,975 INFO L225 Difference]: With dead ends: 75 [2023-11-26 12:01:11,975 INFO L226 Difference]: Without dead ends: 74 [2023-11-26 12:01:11,976 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 [2023-11-26 12:01:11,978 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:11,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 165 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-26 12:01:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2023-11-26 12:01:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 60 states have internal predecessors, (72), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2023-11-26 12:01:12,002 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 14 [2023-11-26 12:01:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,002 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2023-11-26 12:01:12,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2023-11-26 12:01:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 12:01:12,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:12,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:12,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,005 INFO L85 PathProgramCache]: Analyzing trace with hash 633203639, now seen corresponding path program 1 times [2023-11-26 12:01:12,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59313002] [2023-11-26 12:01:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59313002] [2023-11-26 12:01:12,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59313002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669605062] [2023-11-26 12:01:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:12,098 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,188 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2023-11-26 12:01:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 12:01:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,190 INFO L225 Difference]: With dead ends: 135 [2023-11-26 12:01:12,190 INFO L226 Difference]: Without dead ends: 68 [2023-11-26 12:01:12,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:12,194 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 43 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:12,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 233 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-26 12:01:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-26 12:01:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 55 states have internal predecessors, (65), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 12:01:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-11-26 12:01:12,207 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 15 [2023-11-26 12:01:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,208 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-11-26 12:01:12,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-11-26 12:01:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 12:01:12,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:12,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:12,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash 633210622, now seen corresponding path program 1 times [2023-11-26 12:01:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252194379] [2023-11-26 12:01:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252194379] [2023-11-26 12:01:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252194379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136109554] [2023-11-26 12:01:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:12,330 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,378 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2023-11-26 12:01:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 12:01:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,381 INFO L225 Difference]: With dead ends: 68 [2023-11-26 12:01:12,381 INFO L226 Difference]: Without dead ends: 67 [2023-11-26 12:01:12,382 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 [2023-11-26 12:01:12,383 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:12,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-26 12:01:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2023-11-26 12:01:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 54 states have internal predecessors, (64), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 12:01:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2023-11-26 12:01:12,395 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 15 [2023-11-26 12:01:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,395 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2023-11-26 12:01:12,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2023-11-26 12:01:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 12:01:12,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:12,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:12,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1845307151, now seen corresponding path program 1 times [2023-11-26 12:01:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142927702] [2023-11-26 12:01:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142927702] [2023-11-26 12:01:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142927702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208345346] [2023-11-26 12:01:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:12,534 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,688 INFO L93 Difference]: Finished difference Result 140 states and 173 transitions. [2023-11-26 12:01:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-26 12:01:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,691 INFO L225 Difference]: With dead ends: 140 [2023-11-26 12:01:12,693 INFO L226 Difference]: Without dead ends: 80 [2023-11-26 12:01:12,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:12,704 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 31 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:12,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 255 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-26 12:01:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-26 12:01:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2023-11-26 12:01:12,728 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 16 [2023-11-26 12:01:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,729 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2023-11-26 12:01:12,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2023-11-26 12:01:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 12:01:12,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:12,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:12,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash 280662530, now seen corresponding path program 1 times [2023-11-26 12:01:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959686423] [2023-11-26 12:01:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959686423] [2023-11-26 12:01:12,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959686423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:12,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:12,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076571010] [2023-11-26 12:01:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:12,949 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,986 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2023-11-26 12:01:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:12,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-26 12:01:12,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,988 INFO L225 Difference]: With dead ends: 105 [2023-11-26 12:01:12,989 INFO L226 Difference]: Without dead ends: 78 [2023-11-26 12:01:12,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:12,990 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 373 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 [2023-11-26 12:01:12,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 373 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-26 12:01:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-26 12:01:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 65 states have internal predecessors, (76), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:01:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2023-11-26 12:01:13,001 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 17 [2023-11-26 12:01:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,002 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2023-11-26 12:01:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2023-11-26 12:01:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 12:01:13,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:01:13,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:13,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1369729246, now seen corresponding path program 1 times [2023-11-26 12:01:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787211070] [2023-11-26 12:01:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787211070] [2023-11-26 12:01:13,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787211070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:13,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432669592] [2023-11-26 12:01:13,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:13,117 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:13,264 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2023-11-26 12:01:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 12:01:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,268 INFO L225 Difference]: With dead ends: 80 [2023-11-26 12:01:13,268 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 12:01:13,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:13,272 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 44 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:13,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 253 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 12:01:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-11-26 12:01:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 65 states have internal predecessors, (75), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:01:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2023-11-26 12:01:13,301 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 17 [2023-11-26 12:01:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,302 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2023-11-26 12:01:13,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2023-11-26 12:01:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 12:01:13,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:01:13,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:13,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1213006540, now seen corresponding path program 1 times [2023-11-26 12:01:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378879733] [2023-11-26 12:01:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378879733] [2023-11-26 12:01:13,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378879733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841791877] [2023-11-26 12:01:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:13,345 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:13,384 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2023-11-26 12:01:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-26 12:01:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,388 INFO L225 Difference]: With dead ends: 80 [2023-11-26 12:01:13,388 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 12:01:13,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:13,392 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 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 [2023-11-26 12:01:13,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 12:01:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2023-11-26 12:01:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 64 states have internal predecessors, (74), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:01:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2023-11-26 12:01:13,411 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 18 [2023-11-26 12:01:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,412 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2023-11-26 12:01:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2023-11-26 12:01:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 12:01:13,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:01:13,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:13,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 488066396, now seen corresponding path program 1 times [2023-11-26 12:01:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867316845] [2023-11-26 12:01:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867316845] [2023-11-26 12:01:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867316845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928056502] [2023-11-26 12:01:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:13,500 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:13,627 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2023-11-26 12:01:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:13,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-26 12:01:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,629 INFO L225 Difference]: With dead ends: 106 [2023-11-26 12:01:13,629 INFO L226 Difference]: Without dead ends: 103 [2023-11-26 12:01:13,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:13,630 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 41 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:13,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 279 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-26 12:01:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2023-11-26 12:01:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 82 states have internal predecessors, (97), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 12:01:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2023-11-26 12:01:13,640 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 18 [2023-11-26 12:01:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,641 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2023-11-26 12:01:13,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2023-11-26 12:01:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 12:01:13,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:13,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:13,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1051502997, now seen corresponding path program 1 times [2023-11-26 12:01:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730394618] [2023-11-26 12:01:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730394618] [2023-11-26 12:01:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730394618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:13,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358382512] [2023-11-26 12:01:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:13,754 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:13,820 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2023-11-26 12:01:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-26 12:01:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,824 INFO L225 Difference]: With dead ends: 138 [2023-11-26 12:01:13,824 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 12:01:13,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:13,826 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:13,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 274 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 12:01:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2023-11-26 12:01:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 90 states have internal predecessors, (108), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:01:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-11-26 12:01:13,841 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 19 [2023-11-26 12:01:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,842 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-11-26 12:01:13,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-11-26 12:01:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 12:01:13,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:01:13,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:13,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1183811648, now seen corresponding path program 1 times [2023-11-26 12:01:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18259892] [2023-11-26 12:01:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18259892] [2023-11-26 12:01:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18259892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:13,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146338120] [2023-11-26 12:01:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:13,912 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:14,006 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2023-11-26 12:01:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:14,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-26 12:01:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:14,009 INFO L225 Difference]: With dead ends: 133 [2023-11-26 12:01:14,009 INFO L226 Difference]: Without dead ends: 132 [2023-11-26 12:01:14,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:14,011 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 40 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:14,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 246 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-26 12:01:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2023-11-26 12:01:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 103 states have internal predecessors, (127), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 12:01:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2023-11-26 12:01:14,027 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 21 [2023-11-26 12:01:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:14,028 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2023-11-26 12:01:14,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2023-11-26 12:01:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 12:01:14,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:14,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:14,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:01:14,030 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:14,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 544562351, now seen corresponding path program 1 times [2023-11-26 12:01:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121009496] [2023-11-26 12:01:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:14,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121009496] [2023-11-26 12:01:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121009496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308356654] [2023-11-26 12:01:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:14,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:14,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:14,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:14,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:01:14,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:14,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308356654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:14,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2023-11-26 12:01:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603126615] [2023-11-26 12:01:14,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:14,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-26 12:01:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-26 12:01:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:01:14,794 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 15 states have internal predecessors, (61), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:15,520 INFO L93 Difference]: Finished difference Result 270 states and 342 transitions. [2023-11-26 12:01:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 12:01:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 15 states have internal predecessors, (61), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-26 12:01:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:15,523 INFO L225 Difference]: With dead ends: 270 [2023-11-26 12:01:15,523 INFO L226 Difference]: Without dead ends: 163 [2023-11-26 12:01:15,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 12:01:15,526 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 203 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:15,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 695 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:01:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-26 12:01:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2023-11-26 12:01:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 123 states have internal predecessors, (151), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-26 12:01:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2023-11-26 12:01:15,548 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 24 [2023-11-26 12:01:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:15,549 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2023-11-26 12:01:15,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 15 states have internal predecessors, (61), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2023-11-26 12:01:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 12:01:15,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:15,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:15,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:15,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:01:15,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:15,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash 86192857, now seen corresponding path program 1 times [2023-11-26 12:01:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:15,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81060630] [2023-11-26 12:01:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81060630] [2023-11-26 12:01:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81060630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:15,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:15,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064954589] [2023-11-26 12:01:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:15,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:15,810 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:15,899 INFO L93 Difference]: Finished difference Result 177 states and 221 transitions. [2023-11-26 12:01:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-26 12:01:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:15,902 INFO L225 Difference]: With dead ends: 177 [2023-11-26 12:01:15,902 INFO L226 Difference]: Without dead ends: 175 [2023-11-26 12:01:15,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:15,903 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 35 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:15,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 238 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-26 12:01:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2023-11-26 12:01:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.2945736434108528) internal successors, (167), 135 states have internal predecessors, (167), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:01:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2023-11-26 12:01:15,922 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 26 [2023-11-26 12:01:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:15,924 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2023-11-26 12:01:15,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2023-11-26 12:01:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 12:01:15,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:15,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:01:15,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:15,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -654845542, now seen corresponding path program 1 times [2023-11-26 12:01:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726293191] [2023-11-26 12:01:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:16,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:16,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726293191] [2023-11-26 12:01:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726293191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269899261] [2023-11-26 12:01:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:16,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:01:16,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:16,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:16,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269899261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:16,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:16,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2023-11-26 12:01:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596570466] [2023-11-26 12:01:16,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:01:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:01:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:16,359 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:16,609 INFO L93 Difference]: Finished difference Result 281 states and 349 transitions. [2023-11-26 12:01:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:16,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-26 12:01:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:16,613 INFO L225 Difference]: With dead ends: 281 [2023-11-26 12:01:16,613 INFO L226 Difference]: Without dead ends: 211 [2023-11-26 12:01:16,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:16,616 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 68 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:16,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 353 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-26 12:01:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2023-11-26 12:01:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.271604938271605) internal successors, (206), 168 states have internal predecessors, (206), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 12:01:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 255 transitions. [2023-11-26 12:01:16,638 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 255 transitions. Word has length 26 [2023-11-26 12:01:16,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:16,639 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 255 transitions. [2023-11-26 12:01:16,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 255 transitions. [2023-11-26 12:01:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 12:01:16,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:16,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:16,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:16,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:16,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -410415671, now seen corresponding path program 1 times [2023-11-26 12:01:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550880086] [2023-11-26 12:01:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550880086] [2023-11-26 12:01:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550880086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676695095] [2023-11-26 12:01:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:16,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:17,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:01:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:17,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:17,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676695095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:17,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-11-26 12:01:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825233496] [2023-11-26 12:01:17,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:17,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 12:01:17,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 12:01:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:17,194 INFO L87 Difference]: Start difference. First operand 207 states and 255 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:17,429 INFO L93 Difference]: Finished difference Result 250 states and 320 transitions. [2023-11-26 12:01:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:17,430 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2023-11-26 12:01:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:17,432 INFO L225 Difference]: With dead ends: 250 [2023-11-26 12:01:17,432 INFO L226 Difference]: Without dead ends: 205 [2023-11-26 12:01:17,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-26 12:01:17,434 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 77 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:17,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 671 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-26 12:01:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2023-11-26 12:01:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.2287581699346406) internal successors, (188), 159 states have internal predecessors, (188), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 12:01:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2023-11-26 12:01:17,458 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 29 [2023-11-26 12:01:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:17,459 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2023-11-26 12:01:17,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2023-11-26 12:01:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 12:01:17,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:17,461 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:17,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:17,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:17,667 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:17,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2025647906, now seen corresponding path program 1 times [2023-11-26 12:01:17,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904845879] [2023-11-26 12:01:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904845879] [2023-11-26 12:01:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904845879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154188965] [2023-11-26 12:01:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:17,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:17,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:01:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:17,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:17,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154188965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:17,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:17,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-11-26 12:01:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35253472] [2023-11-26 12:01:17,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:17,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:17,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:17,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:17,933 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:18,010 INFO L93 Difference]: Finished difference Result 199 states and 235 transitions. [2023-11-26 12:01:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-26 12:01:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:18,012 INFO L225 Difference]: With dead ends: 199 [2023-11-26 12:01:18,012 INFO L226 Difference]: Without dead ends: 169 [2023-11-26 12:01:18,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:18,014 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 78 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:18,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 267 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-26 12:01:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2023-11-26 12:01:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:01:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2023-11-26 12:01:18,028 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 31 [2023-11-26 12:01:18,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:18,029 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2023-11-26 12:01:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 7 states have internal predecessors, (40), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:01:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2023-11-26 12:01:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 12:01:18,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:18,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:18,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:01:18,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:01:18,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:18,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1194774469, now seen corresponding path program 1 times [2023-11-26 12:01:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879540748] [2023-11-26 12:01:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:18,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879540748] [2023-11-26 12:01:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879540748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781871136] [2023-11-26 12:01:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:18,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:18,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:18,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:01:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:18,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:18,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:18,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781871136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-26 12:01:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653804506] [2023-11-26 12:01:18,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:01:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:01:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:18,540 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:18,633 INFO L93 Difference]: Finished difference Result 177 states and 209 transitions. [2023-11-26 12:01:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2023-11-26 12:01:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:18,635 INFO L225 Difference]: With dead ends: 177 [2023-11-26 12:01:18,636 INFO L226 Difference]: Without dead ends: 173 [2023-11-26 12:01:18,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:18,637 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 24 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:18,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 480 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-26 12:01:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-11-26 12:01:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.197080291970803) internal successors, (164), 140 states have internal predecessors, (164), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-26 12:01:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2023-11-26 12:01:18,652 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 31 [2023-11-26 12:01:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:18,652 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2023-11-26 12:01:18,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2023-11-26 12:01:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 12:01:18,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:18,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:18,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:18,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:01:18,860 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:18,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1668046118, now seen corresponding path program 1 times [2023-11-26 12:01:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619278256] [2023-11-26 12:01:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619278256] [2023-11-26 12:01:19,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619278256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:19,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903516134] [2023-11-26 12:01:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:19,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:19,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:19,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:01:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:01:19,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903516134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:19,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:19,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2023-11-26 12:01:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722962023] [2023-11-26 12:01:19,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:01:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:01:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:01:19,428 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 18 states, 16 states have (on average 3.0625) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:19,819 INFO L93 Difference]: Finished difference Result 299 states and 354 transitions. [2023-11-26 12:01:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:01:19,820 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-26 12:01:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:19,822 INFO L225 Difference]: With dead ends: 299 [2023-11-26 12:01:19,822 INFO L226 Difference]: Without dead ends: 160 [2023-11-26 12:01:19,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:01:19,824 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:19,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 549 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:01:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-26 12:01:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2023-11-26 12:01:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 123 states have internal predecessors, (140), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-26 12:01:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2023-11-26 12:01:19,852 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 33 [2023-11-26 12:01:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:19,853 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2023-11-26 12:01:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2023-11-26 12:01:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:01:19,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:19,854 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:19,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:20,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:20,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1657679934, now seen corresponding path program 1 times [2023-11-26 12:01:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089757025] [2023-11-26 12:01:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:20,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:20,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089757025] [2023-11-26 12:01:20,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089757025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:20,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727268945] [2023-11-26 12:01:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:20,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:20,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:01:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:20,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:20,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727268945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:20,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 12:01:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664541633] [2023-11-26 12:01:20,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:20,235 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:20,341 INFO L93 Difference]: Finished difference Result 292 states and 350 transitions. [2023-11-26 12:01:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-26 12:01:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:20,343 INFO L225 Difference]: With dead ends: 292 [2023-11-26 12:01:20,344 INFO L226 Difference]: Without dead ends: 173 [2023-11-26 12:01:20,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:20,345 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 50 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 266 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-26 12:01:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2023-11-26 12:01:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 132 states have internal predecessors, (151), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-26 12:01:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2023-11-26 12:01:20,361 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 38 [2023-11-26 12:01:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:20,361 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2023-11-26 12:01:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2023-11-26 12:01:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:01:20,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:20,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:20,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,568 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:20,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 151747185, now seen corresponding path program 1 times [2023-11-26 12:01:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:20,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068475585] [2023-11-26 12:01:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068475585] [2023-11-26 12:01:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068475585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713012595] [2023-11-26 12:01:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:20,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:01:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 12:01:20,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:21,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713012595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-11-26 12:01:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100255997] [2023-11-26 12:01:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:21,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:21,053 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:21,280 INFO L93 Difference]: Finished difference Result 169 states and 193 transitions. [2023-11-26 12:01:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 12:01:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:21,282 INFO L225 Difference]: With dead ends: 169 [2023-11-26 12:01:21,282 INFO L226 Difference]: Without dead ends: 168 [2023-11-26 12:01:21,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:01:21,283 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 71 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:21,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 254 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-26 12:01:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2023-11-26 12:01:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.1627906976744187) internal successors, (150), 132 states have internal predecessors, (150), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-26 12:01:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2023-11-26 12:01:21,310 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 39 [2023-11-26 12:01:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:21,311 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2023-11-26 12:01:21,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2023-11-26 12:01:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 12:01:21,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:21,312 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:21,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:21,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:21,518 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:21,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash 409195501, now seen corresponding path program 1 times [2023-11-26 12:01:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:21,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309065961] [2023-11-26 12:01:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:01:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309065961] [2023-11-26 12:01:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309065961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445890114] [2023-11-26 12:01:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:21,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:21,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:21,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:21,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:01:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:01:21,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:21,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445890114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:21,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:21,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-11-26 12:01:21,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905034557] [2023-11-26 12:01:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:21,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:21,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:21,833 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand has 8 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:22,044 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2023-11-26 12:01:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-26 12:01:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:22,047 INFO L225 Difference]: With dead ends: 189 [2023-11-26 12:01:22,047 INFO L226 Difference]: Without dead ends: 188 [2023-11-26 12:01:22,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:01:22,050 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:22,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 312 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-26 12:01:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2023-11-26 12:01:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 144 states have internal predecessors, (165), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-26 12:01:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2023-11-26 12:01:22,070 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 40 [2023-11-26 12:01:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:22,070 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2023-11-26 12:01:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2023-11-26 12:01:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 12:01:22,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:22,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:22,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 12:01:22,282 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -663205891, now seen corresponding path program 1 times [2023-11-26 12:01:22,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925990975] [2023-11-26 12:01:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925990975] [2023-11-26 12:01:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925990975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196636069] [2023-11-26 12:01:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:22,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:01:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:22,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:22,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196636069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:22,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-26 12:01:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899995753] [2023-11-26 12:01:22,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 12:01:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 12:01:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:22,950 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:23,168 INFO L93 Difference]: Finished difference Result 195 states and 225 transitions. [2023-11-26 12:01:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 43 [2023-11-26 12:01:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:23,171 INFO L225 Difference]: With dead ends: 195 [2023-11-26 12:01:23,171 INFO L226 Difference]: Without dead ends: 188 [2023-11-26 12:01:23,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-11-26 12:01:23,172 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 96 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:23,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 762 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-26 12:01:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-26 12:01:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 152 states have internal predecessors, (173), 20 states have call successors, (20), 13 states have call predecessors, (20), 15 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-26 12:01:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2023-11-26 12:01:23,187 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 43 [2023-11-26 12:01:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2023-11-26 12:01:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2023-11-26 12:01:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 12:01:23,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:23,188 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:23,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:23,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 12:01:23,395 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:23,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash -332598656, now seen corresponding path program 2 times [2023-11-26 12:01:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621030277] [2023-11-26 12:01:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621030277] [2023-11-26 12:01:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621030277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91531152] [2023-11-26 12:01:23,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:23,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:23,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:23,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:01:23,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:23,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:23,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 12:01:23,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:23,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:01:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91531152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:24,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:24,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-11-26 12:01:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280453537] [2023-11-26 12:01:24,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 12:01:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 12:01:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 12:01:24,303 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 20 states have internal predecessors, (100), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:27,397 INFO L93 Difference]: Finished difference Result 323 states and 382 transitions. [2023-11-26 12:01:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-26 12:01:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 20 states have internal predecessors, (100), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-26 12:01:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:27,400 INFO L225 Difference]: With dead ends: 323 [2023-11-26 12:01:27,401 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 12:01:27,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1376, Invalid=6280, Unknown=0, NotChecked=0, Total=7656 [2023-11-26 12:01:27,407 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 586 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:27,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1007 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:01:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 12:01:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2023-11-26 12:01:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 236 states have (on average 1.1228813559322033) internal successors, (265), 237 states have internal predecessors, (265), 33 states have call successors, (33), 21 states have call predecessors, (33), 23 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2023-11-26 12:01:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 333 transitions. [2023-11-26 12:01:27,437 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 333 transitions. Word has length 46 [2023-11-26 12:01:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:27,438 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 333 transitions. [2023-11-26 12:01:27,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 20 states have internal predecessors, (100), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 333 transitions. [2023-11-26 12:01:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 12:01:27,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:27,439 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:27,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:27,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:27,652 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:27,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1867614973, now seen corresponding path program 2 times [2023-11-26 12:01:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450274839] [2023-11-26 12:01:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:01:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:01:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450274839] [2023-11-26 12:01:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450274839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247041090] [2023-11-26 12:01:28,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:28,115 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:28,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:01:28,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:28,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:28,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 12:01:28,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:01:28,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 76 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:01:29,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247041090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:29,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:29,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2023-11-26 12:01:29,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033666488] [2023-11-26 12:01:29,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:29,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-26 12:01:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:29,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-26 12:01:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2023-11-26 12:01:29,375 INFO L87 Difference]: Start difference. First operand 294 states and 333 transitions. Second operand has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-26 12:01:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:29,854 INFO L93 Difference]: Finished difference Result 327 states and 373 transitions. [2023-11-26 12:01:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 12:01:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 67 [2023-11-26 12:01:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:29,857 INFO L225 Difference]: With dead ends: 327 [2023-11-26 12:01:29,857 INFO L226 Difference]: Without dead ends: 314 [2023-11-26 12:01:29,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2023-11-26 12:01:29,859 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 172 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:29,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 546 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-26 12:01:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-11-26 12:01:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 252 states have (on average 1.1150793650793651) internal successors, (281), 253 states have internal predecessors, (281), 33 states have call successors, (33), 21 states have call predecessors, (33), 27 states have return successors, (39), 39 states have call predecessors, (39), 32 states have call successors, (39) [2023-11-26 12:01:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 353 transitions. [2023-11-26 12:01:29,884 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 353 transitions. Word has length 67 [2023-11-26 12:01:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:29,884 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 353 transitions. [2023-11-26 12:01:29,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-26 12:01:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 353 transitions. [2023-11-26 12:01:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-26 12:01:29,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:29,887 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:29,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 12:01:30,093 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:30,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -78177155, now seen corresponding path program 3 times [2023-11-26 12:01:30,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825316655] [2023-11-26 12:01:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:30,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-26 12:01:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825316655] [2023-11-26 12:01:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825316655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033378093] [2023-11-26 12:01:31,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:31,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:31,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:01:31,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-26 12:01:31,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:31,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-26 12:01:31,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-26 12:01:32,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 30 proven. 356 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-26 12:01:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033378093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:38,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:38,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 23] total 51 [2023-11-26 12:01:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401394415] [2023-11-26 12:01:38,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-26 12:01:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-26 12:01:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2308, Unknown=0, NotChecked=0, Total=2652 [2023-11-26 12:01:38,582 INFO L87 Difference]: Start difference. First operand 314 states and 353 transitions. Second operand has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 50 states have internal predecessors, (148), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-26 12:01:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:40,060 INFO L93 Difference]: Finished difference Result 379 states and 433 transitions. [2023-11-26 12:01:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-26 12:01:40,061 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 50 states have internal predecessors, (148), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) Word has length 129 [2023-11-26 12:01:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:40,063 INFO L225 Difference]: With dead ends: 379 [2023-11-26 12:01:40,064 INFO L226 Difference]: Without dead ends: 354 [2023-11-26 12:01:40,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1076, Invalid=5730, Unknown=0, NotChecked=0, Total=6806 [2023-11-26 12:01:40,068 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 188 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:40,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1198 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-26 12:01:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-11-26 12:01:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 284 states have (on average 1.102112676056338) internal successors, (313), 285 states have internal predecessors, (313), 33 states have call successors, (33), 21 states have call predecessors, (33), 35 states have return successors, (47), 47 states have call predecessors, (47), 32 states have call successors, (47) [2023-11-26 12:01:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 393 transitions. [2023-11-26 12:01:40,094 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 393 transitions. Word has length 129 [2023-11-26 12:01:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:40,095 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 393 transitions. [2023-11-26 12:01:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 50 states have internal predecessors, (148), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-26 12:01:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 393 transitions. [2023-11-26 12:01:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 12:01:40,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:40,098 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:40,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 12:01:40,304 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:40,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1282436265, now seen corresponding path program 1 times [2023-11-26 12:01:40,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:40,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155935341] [2023-11-26 12:01:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:40,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 12:01:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 12:01:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:01:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 12:01:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 75 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-26 12:01:40,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:40,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155935341] [2023-11-26 12:01:40,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155935341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:40,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240273964] [2023-11-26 12:01:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:40,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:40,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:40,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:40,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:01:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:40,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:01:40,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 37 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:01:41,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 64 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:01:42,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240273964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:42,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 24 [2023-11-26 12:01:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739608872] [2023-11-26 12:01:42,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-26 12:01:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-26 12:01:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:01:42,537 INFO L87 Difference]: Start difference. First operand 354 states and 393 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-26 12:01:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:42,867 INFO L93 Difference]: Finished difference Result 603 states and 679 transitions. [2023-11-26 12:01:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 12:01:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 78 [2023-11-26 12:01:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:42,869 INFO L225 Difference]: With dead ends: 603 [2023-11-26 12:01:42,869 INFO L226 Difference]: Without dead ends: 114 [2023-11-26 12:01:42,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 12:01:42,872 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:42,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 360 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-26 12:01:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-26 12:01:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 12:01:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2023-11-26 12:01:42,878 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 78 [2023-11-26 12:01:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:42,879 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2023-11-26 12:01:42,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-26 12:01:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2023-11-26 12:01:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-26 12:01:42,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:42,882 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:42,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-26 12:01:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 12:01:43,087 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:01:43,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1479956355, now seen corresponding path program 4 times [2023-11-26 12:01:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172607746] [2023-11-26 12:01:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:43,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:01:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:01:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-11-26 12:01:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:50,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172607746] [2023-11-26 12:01:50,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172607746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:50,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296398641] [2023-11-26 12:01:50,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 12:01:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:50,559 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c361d170-e736-408d-a698-e3db34871145/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 12:01:50,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 12:01:50,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:50,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-26 12:01:50,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-11-26 12:01:51,890 INFO L327 TraceCheckSpWp]: Computing backward predicates...