./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77987d39218daa3d8ca19fe9337f6493b276d704fa95c2d6fb7800ec30efdcea --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:41,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:41,730 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:40:41,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:41,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:41,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:41,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:41,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:41,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:41,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:41,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:41,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:41,773 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:41,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:41,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:41,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:41,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:41,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:41,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:41,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:41,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:41,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:41,780 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:40:41,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:41,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:41,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:41,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:41,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:41,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:41,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:41,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:41,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:41,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:41,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:41,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:41,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:41,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:41,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:41,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:41,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:41,790 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:41,791 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_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77987d39218daa3d8ca19fe9337f6493b276d704fa95c2d6fb7800ec30efdcea [2023-11-19 07:40:42,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:42,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:42,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:42,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:42,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:42,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2023-11-19 07:40:45,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:45,956 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:45,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2023-11-19 07:40:45,966 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/data/545fbb511/fcc5769be68845afb5bfdc2b33029110/FLAGdfc0a4e61 [2023-11-19 07:40:45,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/data/545fbb511/fcc5769be68845afb5bfdc2b33029110 [2023-11-19 07:40:45,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:45,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:45,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:45,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:45,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:46,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:45" (1/1) ... [2023-11-19 07:40:46,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be0acca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46, skipping insertion in model container [2023-11-19 07:40:46,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:45" (1/1) ... [2023-11-19 07:40:46,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:46,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:46,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:46,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:46,343 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:46,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46 WrapperNode [2023-11-19 07:40:46,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:46,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:46,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:46,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:46,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,406 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2023-11-19 07:40:46,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:46,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:46,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:46,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:46,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:46,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:46,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:46,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:46,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:46,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:46,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:46,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:40:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:40:46,684 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:46,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:47,297 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:47,311 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:47,311 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:40:47,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:47 BoogieIcfgContainer [2023-11-19 07:40:47,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:47,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:47,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:47,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:47,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:45" (1/3) ... [2023-11-19 07:40:47,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5503d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:47, skipping insertion in model container [2023-11-19 07:40:47,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (2/3) ... [2023-11-19 07:40:47,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5503d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:47, skipping insertion in model container [2023-11-19 07:40:47,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:47" (3/3) ... [2023-11-19 07:40:47,344 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2023-11-19 07:40:47,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:47,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-19 07:40:47,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:47,453 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;@379b18a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:47,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-19 07:40:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 134 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:40:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:40:47,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:47,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:47,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:47,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 426625631, now seen corresponding path program 1 times [2023-11-19 07:40:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511377394] [2023-11-19 07:40:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:40:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:40:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:47,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:47,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511377394] [2023-11-19 07:40:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511377394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:47,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473430123] [2023-11-19 07:40:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:47,913 INFO L87 Difference]: Start difference. First operand has 146 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 134 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:40:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:48,009 INFO L93 Difference]: Finished difference Result 288 states and 320 transitions. [2023-11-19 07:40:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-11-19 07:40:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:48,026 INFO L225 Difference]: With dead ends: 288 [2023-11-19 07:40:48,027 INFO L226 Difference]: Without dead ends: 139 [2023-11-19 07:40:48,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:48,042 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:48,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-19 07:40:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-19 07:40:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 128 states have internal predecessors, (131), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:40:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2023-11-19 07:40:48,117 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 15 [2023-11-19 07:40:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:48,118 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2023-11-19 07:40:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:40:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2023-11-19 07:40:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:40:48,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:48,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:48,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:48,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1184948511, now seen corresponding path program 1 times [2023-11-19 07:40:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801030033] [2023-11-19 07:40:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:40:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:40:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:48,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801030033] [2023-11-19 07:40:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801030033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270263893] [2023-11-19 07:40:48,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:48,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:48,360 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:48,504 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2023-11-19 07:40:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-19 07:40:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:48,510 INFO L225 Difference]: With dead ends: 204 [2023-11-19 07:40:48,515 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 07:40:48,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:48,520 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 9 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:48,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 416 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 07:40:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-19 07:40:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 75 states have (on average 1.8) internal successors, (135), 132 states have internal predecessors, (135), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:40:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2023-11-19 07:40:48,597 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 15 [2023-11-19 07:40:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:48,600 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2023-11-19 07:40:48,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2023-11-19 07:40:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:40:48,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:48,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:48,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:48,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash 464929231, now seen corresponding path program 1 times [2023-11-19 07:40:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541449052] [2023-11-19 07:40:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:48,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395409792] [2023-11-19 07:40:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:48,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:48,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:40:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:48,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:48,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541449052] [2023-11-19 07:40:48,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395409792] [2023-11-19 07:40:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395409792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224004063] [2023-11-19 07:40:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:48,900 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:49,261 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2023-11-19 07:40:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:49,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-19 07:40:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:49,265 INFO L225 Difference]: With dead ends: 259 [2023-11-19 07:40:49,265 INFO L226 Difference]: Without dead ends: 255 [2023-11-19 07:40:49,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:49,268 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 105 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:49,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 169 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-19 07:40:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 181. [2023-11-19 07:40:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 108 states have (on average 1.8240740740740742) internal successors, (197), 165 states have internal predecessors, (197), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:40:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 223 transitions. [2023-11-19 07:40:49,294 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 223 transitions. Word has length 18 [2023-11-19 07:40:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:49,295 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 223 transitions. [2023-11-19 07:40:49,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 223 transitions. [2023-11-19 07:40:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:40:49,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:49,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:49,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:49,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:49,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:49,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 120393905, now seen corresponding path program 1 times [2023-11-19 07:40:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060357810] [2023-11-19 07:40:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817605719] [2023-11-19 07:40:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:49,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:49,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:40:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:49,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:49,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:49,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060357810] [2023-11-19 07:40:49,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817605719] [2023-11-19 07:40:49,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817605719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181740201] [2023-11-19 07:40:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:49,648 INFO L87 Difference]: Start difference. First operand 181 states and 223 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:49,827 INFO L93 Difference]: Finished difference Result 303 states and 353 transitions. [2023-11-19 07:40:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:49,828 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-19 07:40:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:49,831 INFO L225 Difference]: With dead ends: 303 [2023-11-19 07:40:49,831 INFO L226 Difference]: Without dead ends: 295 [2023-11-19 07:40:49,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:49,837 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 103 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:49,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 213 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:40:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-19 07:40:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 237. [2023-11-19 07:40:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.7848101265822784) internal successors, (282), 215 states have internal predecessors, (282), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 07:40:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 320 transitions. [2023-11-19 07:40:49,886 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 320 transitions. Word has length 20 [2023-11-19 07:40:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 320 transitions. [2023-11-19 07:40:49,887 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 320 transitions. [2023-11-19 07:40:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:40:49,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:49,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:49,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:50,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:50,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -265572461, now seen corresponding path program 1 times [2023-11-19 07:40:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519731637] [2023-11-19 07:40:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:50,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994290924] [2023-11-19 07:40:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:50,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:40:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:40:50,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:50,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:50,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:50,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519731637] [2023-11-19 07:40:50,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994290924] [2023-11-19 07:40:50,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994290924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:50,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:50,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505079394] [2023-11-19 07:40:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:50,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,361 INFO L87 Difference]: Start difference. First operand 237 states and 320 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, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,647 INFO L93 Difference]: Finished difference Result 295 states and 339 transitions. [2023-11-19 07:40:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:50,649 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, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-19 07:40:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,658 INFO L225 Difference]: With dead ends: 295 [2023-11-19 07:40:50,659 INFO L226 Difference]: Without dead ends: 281 [2023-11-19 07:40:50,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,660 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 86 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 164 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-19 07:40:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 203. [2023-11-19 07:40:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 186 states have internal predecessors, (220), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:40:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 248 transitions. [2023-11-19 07:40:50,697 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 248 transitions. Word has length 22 [2023-11-19 07:40:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,698 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 248 transitions. [2023-11-19 07:40:50,698 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, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:40:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 248 transitions. [2023-11-19 07:40:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:40:50,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,700 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] [2023-11-19 07:40:50,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:50,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:50,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 997499080, now seen corresponding path program 1 times [2023-11-19 07:40:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732400783] [2023-11-19 07:40:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:50,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439738748] [2023-11-19 07:40:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:50,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:50,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:50,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:40:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:50,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:51,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732400783] [2023-11-19 07:40:51,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439738748] [2023-11-19 07:40:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439738748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213255704] [2023-11-19 07:40:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,018 INFO L87 Difference]: Start difference. First operand 203 states and 248 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:51,174 INFO L93 Difference]: Finished difference Result 385 states and 472 transitions. [2023-11-19 07:40:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-19 07:40:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:51,178 INFO L225 Difference]: With dead ends: 385 [2023-11-19 07:40:51,178 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 07:40:51,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,182 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 103 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:51,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 204 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 07:40:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 284. [2023-11-19 07:40:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 201 states have (on average 1.6965174129353233) internal successors, (341), 258 states have internal predecessors, (341), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 387 transitions. [2023-11-19 07:40:51,206 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 387 transitions. Word has length 29 [2023-11-19 07:40:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:51,207 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 387 transitions. [2023-11-19 07:40:51,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 387 transitions. [2023-11-19 07:40:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:40:51,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:51,209 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] [2023-11-19 07:40:51,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:51,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:51,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:51,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash 818910986, now seen corresponding path program 1 times [2023-11-19 07:40:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128597352] [2023-11-19 07:40:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:51,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:51,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970727919] [2023-11-19 07:40:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:51,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:51,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:40:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:51,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:51,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128597352] [2023-11-19 07:40:51,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970727919] [2023-11-19 07:40:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970727919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:51,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331352092] [2023-11-19 07:40:51,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:51,631 INFO L87 Difference]: Start difference. First operand 284 states and 387 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:52,137 INFO L93 Difference]: Finished difference Result 371 states and 452 transitions. [2023-11-19 07:40:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-19 07:40:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:52,141 INFO L225 Difference]: With dead ends: 371 [2023-11-19 07:40:52,141 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 07:40:52,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:52,142 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 313 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:52,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 149 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:40:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 07:40:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 284. [2023-11-19 07:40:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 201 states have (on average 1.6766169154228856) internal successors, (337), 258 states have internal predecessors, (337), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 383 transitions. [2023-11-19 07:40:52,160 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 383 transitions. Word has length 31 [2023-11-19 07:40:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:52,161 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 383 transitions. [2023-11-19 07:40:52,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 383 transitions. [2023-11-19 07:40:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:40:52,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:52,162 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, 1] [2023-11-19 07:40:52,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:52,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:52,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash -383563140, now seen corresponding path program 1 times [2023-11-19 07:40:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231325252] [2023-11-19 07:40:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:52,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:52,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757352075] [2023-11-19 07:40:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:52,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:52,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:52,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:52,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:40:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:52,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:52,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:52,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:52,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231325252] [2023-11-19 07:40:52,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:52,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757352075] [2023-11-19 07:40:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757352075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092672201] [2023-11-19 07:40:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:52,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:52,548 INFO L87 Difference]: Start difference. First operand 284 states and 383 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:52,803 INFO L93 Difference]: Finished difference Result 369 states and 448 transitions. [2023-11-19 07:40:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-19 07:40:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:52,806 INFO L225 Difference]: With dead ends: 369 [2023-11-19 07:40:52,806 INFO L226 Difference]: Without dead ends: 367 [2023-11-19 07:40:52,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:52,807 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 215 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:52,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 169 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:40:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-19 07:40:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 284. [2023-11-19 07:40:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 201 states have (on average 1.6567164179104477) internal successors, (333), 258 states have internal predecessors, (333), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 379 transitions. [2023-11-19 07:40:52,826 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 379 transitions. Word has length 32 [2023-11-19 07:40:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:52,826 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 379 transitions. [2023-11-19 07:40:52,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 379 transitions. [2023-11-19 07:40:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:40:52,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:52,828 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, 1, 1] [2023-11-19 07:40:52,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:53,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:53,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 994444620, now seen corresponding path program 1 times [2023-11-19 07:40:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584530775] [2023-11-19 07:40:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:53,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:53,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111292959] [2023-11-19 07:40:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:53,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:53,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:53,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:53,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:40:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:53,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:53,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:53,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:53,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584530775] [2023-11-19 07:40:53,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111292959] [2023-11-19 07:40:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111292959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:53,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253406497] [2023-11-19 07:40:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:53,187 INFO L87 Difference]: Start difference. First operand 284 states and 379 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:53,526 INFO L93 Difference]: Finished difference Result 373 states and 452 transitions. [2023-11-19 07:40:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 07:40:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:53,529 INFO L225 Difference]: With dead ends: 373 [2023-11-19 07:40:53,530 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:40:53,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:53,531 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 105 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:53,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 231 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:40:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 285. [2023-11-19 07:40:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 202 states have (on average 1.6386138613861385) internal successors, (331), 259 states have internal predecessors, (331), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 377 transitions. [2023-11-19 07:40:53,567 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 377 transitions. Word has length 33 [2023-11-19 07:40:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:53,569 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 377 transitions. [2023-11-19 07:40:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 377 transitions. [2023-11-19 07:40:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:40:53,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:53,574 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, 1, 1, 1] [2023-11-19 07:40:53,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:53,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:53,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash 763012222, now seen corresponding path program 1 times [2023-11-19 07:40:53,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:53,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143086559] [2023-11-19 07:40:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:53,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687330800] [2023-11-19 07:40:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:53,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:53,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:53,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:40:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:53,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:53,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:53,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143086559] [2023-11-19 07:40:53,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687330800] [2023-11-19 07:40:53,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687330800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534624514] [2023-11-19 07:40:53,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:53,982 INFO L87 Difference]: Start difference. First operand 285 states and 377 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:54,291 INFO L93 Difference]: Finished difference Result 371 states and 448 transitions. [2023-11-19 07:40:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-11-19 07:40:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:54,297 INFO L225 Difference]: With dead ends: 371 [2023-11-19 07:40:54,297 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 07:40:54,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:54,299 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 103 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:54,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 260 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 07:40:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 286. [2023-11-19 07:40:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 203 states have (on average 1.6206896551724137) internal successors, (329), 260 states have internal predecessors, (329), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2023-11-19 07:40:54,326 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 34 [2023-11-19 07:40:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:54,326 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2023-11-19 07:40:54,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:40:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2023-11-19 07:40:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 07:40:54,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:54,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:54,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:54,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:40:54,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:54,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 97827175, now seen corresponding path program 1 times [2023-11-19 07:40:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885087504] [2023-11-19 07:40:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:54,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:54,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610440109] [2023-11-19 07:40:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:54,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:54,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:40:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:54,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:54,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:40:54,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885087504] [2023-11-19 07:40:54,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:54,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610440109] [2023-11-19 07:40:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610440109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:54,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:54,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66615315] [2023-11-19 07:40:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:54,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:54,742 INFO L87 Difference]: Start difference. First operand 286 states and 375 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:55,241 INFO L93 Difference]: Finished difference Result 332 states and 394 transitions. [2023-11-19 07:40:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:55,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-19 07:40:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:55,245 INFO L225 Difference]: With dead ends: 332 [2023-11-19 07:40:55,245 INFO L226 Difference]: Without dead ends: 330 [2023-11-19 07:40:55,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:55,247 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 268 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:55,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 167 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:40:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-19 07:40:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 287. [2023-11-19 07:40:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 204 states have (on average 1.607843137254902) internal successors, (328), 261 states have internal predecessors, (328), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 374 transitions. [2023-11-19 07:40:55,268 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 374 transitions. Word has length 42 [2023-11-19 07:40:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:55,269 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 374 transitions. [2023-11-19 07:40:55,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 374 transitions. [2023-11-19 07:40:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:40:55,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:55,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:55,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:40:55,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1262324788, now seen corresponding path program 1 times [2023-11-19 07:40:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081287370] [2023-11-19 07:40:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:55,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602378927] [2023-11-19 07:40:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:55,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:55,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:55,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:40:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:55,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:55,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:40:55,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:55,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081287370] [2023-11-19 07:40:55,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:55,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602378927] [2023-11-19 07:40:55,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602378927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:55,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:55,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:55,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206805379] [2023-11-19 07:40:55,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:55,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:55,715 INFO L87 Difference]: Start difference. First operand 287 states and 374 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:55,959 INFO L93 Difference]: Finished difference Result 330 states and 391 transitions. [2023-11-19 07:40:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:55,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-11-19 07:40:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:55,962 INFO L225 Difference]: With dead ends: 330 [2023-11-19 07:40:55,962 INFO L226 Difference]: Without dead ends: 328 [2023-11-19 07:40:55,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:55,964 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 261 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:55,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 165 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:40:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-19 07:40:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 288. [2023-11-19 07:40:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 205 states have (on average 1.5951219512195123) internal successors, (327), 262 states have internal predecessors, (327), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 373 transitions. [2023-11-19 07:40:56,004 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 373 transitions. Word has length 43 [2023-11-19 07:40:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:56,005 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 373 transitions. [2023-11-19 07:40:56,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 373 transitions. [2023-11-19 07:40:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:40:56,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:56,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:56,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:56,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:40:56,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:56,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash -477362679, now seen corresponding path program 1 times [2023-11-19 07:40:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104125707] [2023-11-19 07:40:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:56,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:56,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333021506] [2023-11-19 07:40:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:56,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:56,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:56,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:40:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:56,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:56,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:40:56,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:56,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104125707] [2023-11-19 07:40:56,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333021506] [2023-11-19 07:40:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333021506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:56,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:56,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:56,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078650531] [2023-11-19 07:40:56,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:56,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:56,379 INFO L87 Difference]: Start difference. First operand 288 states and 373 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:56,917 INFO L93 Difference]: Finished difference Result 322 states and 380 transitions. [2023-11-19 07:40:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-19 07:40:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:56,920 INFO L225 Difference]: With dead ends: 322 [2023-11-19 07:40:56,920 INFO L226 Difference]: Without dead ends: 320 [2023-11-19 07:40:56,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:56,922 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 87 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:56,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 274 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:40:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-19 07:40:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 289. [2023-11-19 07:40:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 263 states have internal predecessors, (326), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 372 transitions. [2023-11-19 07:40:56,949 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 372 transitions. Word has length 44 [2023-11-19 07:40:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:56,949 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 372 transitions. [2023-11-19 07:40:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 372 transitions. [2023-11-19 07:40:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:40:56,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:56,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:56,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:57,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:57,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1913341074, now seen corresponding path program 1 times [2023-11-19 07:40:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874476753] [2023-11-19 07:40:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:57,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051514036] [2023-11-19 07:40:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:57,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:57,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:57,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:40:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:57,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:57,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:40:57,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874476753] [2023-11-19 07:40:57,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051514036] [2023-11-19 07:40:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051514036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:57,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487140361] [2023-11-19 07:40:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:57,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:57,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:57,312 INFO L87 Difference]: Start difference. First operand 289 states and 372 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:57,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:57,785 INFO L93 Difference]: Finished difference Result 320 states and 377 transitions. [2023-11-19 07:40:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:57,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2023-11-19 07:40:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:57,788 INFO L225 Difference]: With dead ends: 320 [2023-11-19 07:40:57,788 INFO L226 Difference]: Without dead ends: 318 [2023-11-19 07:40:57,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:57,789 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 85 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:57,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 275 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:40:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-19 07:40:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 290. [2023-11-19 07:40:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 207 states have (on average 1.570048309178744) internal successors, (325), 264 states have internal predecessors, (325), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 371 transitions. [2023-11-19 07:40:57,812 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 371 transitions. Word has length 45 [2023-11-19 07:40:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:57,812 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 371 transitions. [2023-11-19 07:40:57,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:40:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 371 transitions. [2023-11-19 07:40:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:40:57,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:57,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:57,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:58,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:40:58,027 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:58,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:58,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2077001505, now seen corresponding path program 1 times [2023-11-19 07:40:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:58,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657055599] [2023-11-19 07:40:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:58,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604232490] [2023-11-19 07:40:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:58,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:58,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:40:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:58,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:58,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:40:58,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657055599] [2023-11-19 07:40:58,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604232490] [2023-11-19 07:40:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604232490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314847967] [2023-11-19 07:40:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:58,120 INFO L87 Difference]: Start difference. First operand 290 states and 371 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:40:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:58,174 INFO L93 Difference]: Finished difference Result 385 states and 488 transitions. [2023-11-19 07:40:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2023-11-19 07:40:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:58,178 INFO L225 Difference]: With dead ends: 385 [2023-11-19 07:40:58,178 INFO L226 Difference]: Without dead ends: 383 [2023-11-19 07:40:58,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:58,180 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 52 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:58,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 309 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-19 07:40:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 292. [2023-11-19 07:40:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 210 states have (on average 1.5476190476190477) internal successors, (325), 266 states have internal predecessors, (325), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 371 transitions. [2023-11-19 07:40:58,205 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 371 transitions. Word has length 52 [2023-11-19 07:40:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:58,205 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 371 transitions. [2023-11-19 07:40:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:40:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 371 transitions. [2023-11-19 07:40:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:40:58,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:58,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:58,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:58,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:40:58,423 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:58,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -37462655, now seen corresponding path program 1 times [2023-11-19 07:40:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23255327] [2023-11-19 07:40:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:58,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70158835] [2023-11-19 07:40:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:58,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:58,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:58,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:40:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:58,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:58,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:40:58,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23255327] [2023-11-19 07:40:58,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:58,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70158835] [2023-11-19 07:40:58,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70158835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:58,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986637690] [2023-11-19 07:40:58,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:58,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:58,531 INFO L87 Difference]: Start difference. First operand 292 states and 371 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:40:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:58,601 INFO L93 Difference]: Finished difference Result 384 states and 482 transitions. [2023-11-19 07:40:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:58,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2023-11-19 07:40:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:58,604 INFO L225 Difference]: With dead ends: 384 [2023-11-19 07:40:58,605 INFO L226 Difference]: Without dead ends: 382 [2023-11-19 07:40:58,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:58,606 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 50 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:58,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 275 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-19 07:40:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 294. [2023-11-19 07:40:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 213 states have (on average 1.516431924882629) internal successors, (323), 268 states have internal predecessors, (323), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 369 transitions. [2023-11-19 07:40:58,632 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 369 transitions. Word has length 53 [2023-11-19 07:40:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 369 transitions. [2023-11-19 07:40:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:40:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 369 transitions. [2023-11-19 07:40:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:40:58,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:58,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:58,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:58,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:40:58,851 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:58,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1161300465, now seen corresponding path program 1 times [2023-11-19 07:40:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186404713] [2023-11-19 07:40:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:58,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314116883] [2023-11-19 07:40:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:58,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:58,864 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:58,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:40:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:58,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:58,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:40:59,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186404713] [2023-11-19 07:40:59,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314116883] [2023-11-19 07:40:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314116883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:59,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382376010] [2023-11-19 07:40:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:59,111 INFO L87 Difference]: Start difference. First operand 294 states and 369 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:40:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:59,650 INFO L93 Difference]: Finished difference Result 322 states and 397 transitions. [2023-11-19 07:40:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2023-11-19 07:40:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:59,653 INFO L225 Difference]: With dead ends: 322 [2023-11-19 07:40:59,653 INFO L226 Difference]: Without dead ends: 321 [2023-11-19 07:40:59,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:59,654 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 196 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:59,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 183 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:40:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-19 07:40:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2023-11-19 07:40:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 213 states have (on average 1.511737089201878) internal successors, (322), 268 states have internal predecessors, (322), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:40:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 368 transitions. [2023-11-19 07:40:59,678 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 368 transitions. Word has length 54 [2023-11-19 07:40:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:59,678 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 368 transitions. [2023-11-19 07:40:59,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:40:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 368 transitions. [2023-11-19 07:40:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:40:59,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:59,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:59,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:40:59,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:40:59,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1161314367, now seen corresponding path program 1 times [2023-11-19 07:40:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89486117] [2023-11-19 07:40:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:59,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810532761] [2023-11-19 07:40:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:59,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:59,915 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:59,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:40:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:59,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:59,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:00,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:00,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:00,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89486117] [2023-11-19 07:41:00,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:00,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810532761] [2023-11-19 07:41:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810532761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:00,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725492561] [2023-11-19 07:41:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:00,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:00,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:00,156 INFO L87 Difference]: Start difference. First operand 294 states and 368 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:00,762 INFO L93 Difference]: Finished difference Result 321 states and 396 transitions. [2023-11-19 07:41:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2023-11-19 07:41:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:00,765 INFO L225 Difference]: With dead ends: 321 [2023-11-19 07:41:00,765 INFO L226 Difference]: Without dead ends: 320 [2023-11-19 07:41:00,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:00,766 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 195 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:00,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 181 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:41:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-19 07:41:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2023-11-19 07:41:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 215 states have (on average 1.5069767441860464) internal successors, (324), 270 states have internal predecessors, (324), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:41:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 370 transitions. [2023-11-19 07:41:00,787 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 370 transitions. Word has length 54 [2023-11-19 07:41:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:00,787 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 370 transitions. [2023-11-19 07:41:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 370 transitions. [2023-11-19 07:41:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:41:00,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:00,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:00,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:01,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:41:01,016 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -340468281, now seen corresponding path program 1 times [2023-11-19 07:41:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050033885] [2023-11-19 07:41:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:01,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696737455] [2023-11-19 07:41:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:01,032 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:41:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:01,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:41:01,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:01,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:01,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050033885] [2023-11-19 07:41:01,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696737455] [2023-11-19 07:41:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696737455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:01,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167382056] [2023-11-19 07:41:01,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:01,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:01,242 INFO L87 Difference]: Start difference. First operand 296 states and 370 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:01,601 INFO L93 Difference]: Finished difference Result 296 states and 370 transitions. [2023-11-19 07:41:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-19 07:41:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:01,604 INFO L225 Difference]: With dead ends: 296 [2023-11-19 07:41:01,604 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 07:41:01,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:01,605 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:01,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 87 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 07:41:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-19 07:41:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 215 states have (on average 1.4883720930232558) internal successors, (320), 268 states have internal predecessors, (320), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:41:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 366 transitions. [2023-11-19 07:41:01,669 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 366 transitions. Word has length 57 [2023-11-19 07:41:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:01,669 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 366 transitions. [2023-11-19 07:41:01,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 366 transitions. [2023-11-19 07:41:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:41:01,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:01,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:01,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:01,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:01,887 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash -754636665, now seen corresponding path program 1 times [2023-11-19 07:41:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832457476] [2023-11-19 07:41:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:01,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363639196] [2023-11-19 07:41:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:01,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:01,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:01,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:41:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:01,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:41:01,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:02,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832457476] [2023-11-19 07:41:02,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:02,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363639196] [2023-11-19 07:41:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363639196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:02,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:02,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:02,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506178263] [2023-11-19 07:41:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:02,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:02,096 INFO L87 Difference]: Start difference. First operand 294 states and 366 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:02,299 INFO L93 Difference]: Finished difference Result 375 states and 432 transitions. [2023-11-19 07:41:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-19 07:41:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:02,302 INFO L225 Difference]: With dead ends: 375 [2023-11-19 07:41:02,302 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 07:41:02,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:02,303 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 70 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:02,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 175 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:41:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 07:41:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 302. [2023-11-19 07:41:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 223 states have (on average 1.4798206278026906) internal successors, (330), 276 states have internal predecessors, (330), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:41:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 376 transitions. [2023-11-19 07:41:02,328 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 376 transitions. Word has length 57 [2023-11-19 07:41:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:02,328 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 376 transitions. [2023-11-19 07:41:02,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 376 transitions. [2023-11-19 07:41:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:41:02,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:02,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:02,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:02,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:02,547 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:02,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1822312405, now seen corresponding path program 1 times [2023-11-19 07:41:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:02,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189440796] [2023-11-19 07:41:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:02,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:02,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502885188] [2023-11-19 07:41:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:02,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:02,560 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:02,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:41:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:02,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:02,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:02,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189440796] [2023-11-19 07:41:02,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502885188] [2023-11-19 07:41:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502885188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412048894] [2023-11-19 07:41:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:02,725 INFO L87 Difference]: Start difference. First operand 302 states and 376 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:02,782 INFO L93 Difference]: Finished difference Result 302 states and 376 transitions. [2023-11-19 07:41:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2023-11-19 07:41:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:02,785 INFO L225 Difference]: With dead ends: 302 [2023-11-19 07:41:02,786 INFO L226 Difference]: Without dead ends: 301 [2023-11-19 07:41:02,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:02,787 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 109 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:02,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 271 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-19 07:41:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-11-19 07:41:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 223 states have (on average 1.4663677130044843) internal successors, (327), 275 states have internal predecessors, (327), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:41:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2023-11-19 07:41:02,809 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 60 [2023-11-19 07:41:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:02,810 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2023-11-19 07:41:02,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2023-11-19 07:41:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:41:02,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:02,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:02,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:03,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 07:41:03,031 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:03,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash 657109751, now seen corresponding path program 1 times [2023-11-19 07:41:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:03,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428538861] [2023-11-19 07:41:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:03,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861302798] [2023-11-19 07:41:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:03,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:03,048 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:03,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:41:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:03,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:03,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:03,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:03,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:03,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428538861] [2023-11-19 07:41:03,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:03,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861302798] [2023-11-19 07:41:03,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861302798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:03,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209855236] [2023-11-19 07:41:03,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:03,201 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:03,301 INFO L93 Difference]: Finished difference Result 393 states and 481 transitions. [2023-11-19 07:41:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:03,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-11-19 07:41:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:03,305 INFO L225 Difference]: With dead ends: 393 [2023-11-19 07:41:03,306 INFO L226 Difference]: Without dead ends: 392 [2023-11-19 07:41:03,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:41:03,309 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 102 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:03,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 605 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-19 07:41:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 354. [2023-11-19 07:41:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 268 states have (on average 1.4738805970149254) internal successors, (395), 321 states have internal predecessors, (395), 31 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:41:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 457 transitions. [2023-11-19 07:41:03,344 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 457 transitions. Word has length 61 [2023-11-19 07:41:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:03,344 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 457 transitions. [2023-11-19 07:41:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 457 transitions. [2023-11-19 07:41:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:41:03,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:03,346 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:03,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:03,559 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:03,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 122279784, now seen corresponding path program 1 times [2023-11-19 07:41:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852901159] [2023-11-19 07:41:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:03,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:03,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385593786] [2023-11-19 07:41:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:03,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:03,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:03,590 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:03,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:41:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:03,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:41:03,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:03,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852901159] [2023-11-19 07:41:03,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:03,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385593786] [2023-11-19 07:41:03,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385593786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:03,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:41:03,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-19 07:41:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650983847] [2023-11-19 07:41:03,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:41:03,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:41:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:03,878 INFO L87 Difference]: Start difference. First operand 354 states and 457 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-19 07:41:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:04,135 INFO L93 Difference]: Finished difference Result 919 states and 1124 transitions. [2023-11-19 07:41:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:41:04,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 63 [2023-11-19 07:41:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:04,144 INFO L225 Difference]: With dead ends: 919 [2023-11-19 07:41:04,144 INFO L226 Difference]: Without dead ends: 819 [2023-11-19 07:41:04,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:41:04,146 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 310 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:04,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 731 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2023-11-19 07:41:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2023-11-19 07:41:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 563 states have (on average 1.458259325044405) internal successors, (821), 621 states have internal predecessors, (821), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 945 transitions. [2023-11-19 07:41:04,227 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 945 transitions. Word has length 63 [2023-11-19 07:41:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:04,227 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 945 transitions. [2023-11-19 07:41:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-19 07:41:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 945 transitions. [2023-11-19 07:41:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:41:04,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:04,229 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:04,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:04,443 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:04,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 122279769, now seen corresponding path program 1 times [2023-11-19 07:41:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496777454] [2023-11-19 07:41:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586586488] [2023-11-19 07:41:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:04,459 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:04,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:41:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:04,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:04,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:04,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:04,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496777454] [2023-11-19 07:41:04,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:04,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586586488] [2023-11-19 07:41:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586586488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:04,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-19 07:41:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750150005] [2023-11-19 07:41:04,957 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:04,958 INFO L87 Difference]: Start difference. First operand 683 states and 945 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:05,303 INFO L93 Difference]: Finished difference Result 752 states and 1008 transitions. [2023-11-19 07:41:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2023-11-19 07:41:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:05,310 INFO L225 Difference]: With dead ends: 752 [2023-11-19 07:41:05,311 INFO L226 Difference]: Without dead ends: 750 [2023-11-19 07:41:05,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:05,312 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 195 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-19 07:41:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 686. [2023-11-19 07:41:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 566 states have (on average 1.4487632508833923) internal successors, (820), 624 states have internal predecessors, (820), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 944 transitions. [2023-11-19 07:41:05,388 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 944 transitions. Word has length 63 [2023-11-19 07:41:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:05,389 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 944 transitions. [2023-11-19 07:41:05,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 944 transitions. [2023-11-19 07:41:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:41:05,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:05,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:05,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:05,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:41:05,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:05,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash 168760158, now seen corresponding path program 1 times [2023-11-19 07:41:05,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:05,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005521107] [2023-11-19 07:41:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:05,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:05,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347272495] [2023-11-19 07:41:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:05,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,620 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:41:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:05,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:41:05,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:41:05,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005521107] [2023-11-19 07:41:05,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347272495] [2023-11-19 07:41:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347272495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100995704] [2023-11-19 07:41:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:05,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:05,957 INFO L87 Difference]: Start difference. First operand 686 states and 944 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:06,458 INFO L93 Difference]: Finished difference Result 772 states and 1016 transitions. [2023-11-19 07:41:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 65 [2023-11-19 07:41:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:06,465 INFO L225 Difference]: With dead ends: 772 [2023-11-19 07:41:06,465 INFO L226 Difference]: Without dead ends: 771 [2023-11-19 07:41:06,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:06,467 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 143 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:06,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 138 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:41:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-11-19 07:41:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 686. [2023-11-19 07:41:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 566 states have (on average 1.441696113074205) internal successors, (816), 624 states have internal predecessors, (816), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 940 transitions. [2023-11-19 07:41:06,552 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 940 transitions. Word has length 65 [2023-11-19 07:41:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:06,553 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 940 transitions. [2023-11-19 07:41:06,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 940 transitions. [2023-11-19 07:41:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:41:06,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:06,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:06,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:41:06,771 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:06,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -504294404, now seen corresponding path program 1 times [2023-11-19 07:41:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362126820] [2023-11-19 07:41:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:06,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058381050] [2023-11-19 07:41:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:06,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:06,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:06,792 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:06,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:41:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:06,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:06,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:07,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:07,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362126820] [2023-11-19 07:41:07,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058381050] [2023-11-19 07:41:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058381050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:07,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:07,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-19 07:41:07,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742288663] [2023-11-19 07:41:07,264 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:07,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:07,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:07,266 INFO L87 Difference]: Start difference. First operand 686 states and 940 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:07,900 INFO L93 Difference]: Finished difference Result 750 states and 997 transitions. [2023-11-19 07:41:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:07,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2023-11-19 07:41:07,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:07,909 INFO L225 Difference]: With dead ends: 750 [2023-11-19 07:41:07,909 INFO L226 Difference]: Without dead ends: 748 [2023-11-19 07:41:07,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:07,910 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 61 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:07,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 195 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:41:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-19 07:41:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 689. [2023-11-19 07:41:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 569 states have (on average 1.4323374340949033) internal successors, (815), 627 states have internal predecessors, (815), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 939 transitions. [2023-11-19 07:41:08,010 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 939 transitions. Word has length 64 [2023-11-19 07:41:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 939 transitions. [2023-11-19 07:41:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 939 transitions. [2023-11-19 07:41:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:41:08,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:08,012 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:08,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:41:08,237 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:08,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 936597749, now seen corresponding path program 1 times [2023-11-19 07:41:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980306227] [2023-11-19 07:41:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:08,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231861990] [2023-11-19 07:41:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:08,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,257 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:41:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:08,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:41:08,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:41:08,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980306227] [2023-11-19 07:41:08,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231861990] [2023-11-19 07:41:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231861990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:08,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558208524] [2023-11-19 07:41:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:08,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:08,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:08,645 INFO L87 Difference]: Start difference. First operand 689 states and 939 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:09,221 INFO L93 Difference]: Finished difference Result 767 states and 1005 transitions. [2023-11-19 07:41:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:09,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2023-11-19 07:41:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:09,229 INFO L225 Difference]: With dead ends: 767 [2023-11-19 07:41:09,230 INFO L226 Difference]: Without dead ends: 766 [2023-11-19 07:41:09,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:09,231 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 132 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:09,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 147 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:41:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-19 07:41:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 689. [2023-11-19 07:41:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 569 states have (on average 1.4253075571177505) internal successors, (811), 627 states have internal predecessors, (811), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 935 transitions. [2023-11-19 07:41:09,338 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 935 transitions. Word has length 66 [2023-11-19 07:41:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:09,338 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 935 transitions. [2023-11-19 07:41:09,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 935 transitions. [2023-11-19 07:41:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:41:09,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:09,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:09,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:41:09,561 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:09,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 361066525, now seen corresponding path program 1 times [2023-11-19 07:41:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306712014] [2023-11-19 07:41:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:09,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:09,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054670814] [2023-11-19 07:41:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:09,577 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:41:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:09,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-19 07:41:09,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:09,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306712014] [2023-11-19 07:41:09,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054670814] [2023-11-19 07:41:09,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054670814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:09,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:09,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331458018] [2023-11-19 07:41:09,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:09,768 INFO L87 Difference]: Start difference. First operand 689 states and 935 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:10,109 INFO L93 Difference]: Finished difference Result 750 states and 988 transitions. [2023-11-19 07:41:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:10,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 07:41:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:10,115 INFO L225 Difference]: With dead ends: 750 [2023-11-19 07:41:10,115 INFO L226 Difference]: Without dead ends: 749 [2023-11-19 07:41:10,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:10,117 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 87 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:10,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 225 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:10,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-11-19 07:41:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 689. [2023-11-19 07:41:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 569 states have (on average 1.4200351493848857) internal successors, (808), 627 states have internal predecessors, (808), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 932 transitions. [2023-11-19 07:41:10,190 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 932 transitions. Word has length 67 [2023-11-19 07:41:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:10,190 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 932 transitions. [2023-11-19 07:41:10,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 932 transitions. [2023-11-19 07:41:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:41:10,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:10,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:10,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:10,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:41:10,417 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:10,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1691839552, now seen corresponding path program 1 times [2023-11-19 07:41:10,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427447092] [2023-11-19 07:41:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:10,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:10,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827978942] [2023-11-19 07:41:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:10,431 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:10,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:41:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:10,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:41:10,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:41:10,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427447092] [2023-11-19 07:41:10,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827978942] [2023-11-19 07:41:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827978942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:10,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678571015] [2023-11-19 07:41:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:10,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:10,581 INFO L87 Difference]: Start difference. First operand 689 states and 932 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:11,001 INFO L93 Difference]: Finished difference Result 749 states and 985 transitions. [2023-11-19 07:41:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-19 07:41:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:11,007 INFO L225 Difference]: With dead ends: 749 [2023-11-19 07:41:11,008 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 07:41:11,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:11,013 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 84 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 228 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 07:41:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 698. [2023-11-19 07:41:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 578 states have (on average 1.4100346020761245) internal successors, (815), 636 states have internal predecessors, (815), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 55 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:41:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 939 transitions. [2023-11-19 07:41:11,115 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 939 transitions. Word has length 68 [2023-11-19 07:41:11,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:11,116 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 939 transitions. [2023-11-19 07:41:11,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:41:11,116 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 939 transitions. [2023-11-19 07:41:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 07:41:11,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:11,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:11,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:41:11,339 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1020167632, now seen corresponding path program 1 times [2023-11-19 07:41:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216690980] [2023-11-19 07:41:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:11,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:11,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170232074] [2023-11-19 07:41:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:11,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:11,358 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:41:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:11,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:11,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:41:11,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216690980] [2023-11-19 07:41:12,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170232074] [2023-11-19 07:41:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170232074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:12,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:41:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192204176] [2023-11-19 07:41:12,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:12,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:12,051 INFO L87 Difference]: Start difference. First operand 698 states and 939 transitions. Second operand has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:12,881 INFO L93 Difference]: Finished difference Result 897 states and 1155 transitions. [2023-11-19 07:41:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2023-11-19 07:41:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:12,889 INFO L225 Difference]: With dead ends: 897 [2023-11-19 07:41:12,889 INFO L226 Difference]: Without dead ends: 893 [2023-11-19 07:41:12,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:41:12,891 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 599 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:12,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 319 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:41:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-11-19 07:41:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 761. [2023-11-19 07:41:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 633 states have (on average 1.4218009478672986) internal successors, (900), 693 states have internal predecessors, (900), 70 states have call successors, (70), 6 states have call predecessors, (70), 6 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:41:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1040 transitions. [2023-11-19 07:41:12,983 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1040 transitions. Word has length 74 [2023-11-19 07:41:12,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:12,984 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1040 transitions. [2023-11-19 07:41:12,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1040 transitions. [2023-11-19 07:41:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:41:12,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:12,986 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:13,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:13,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:13,199 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:13,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1560425454, now seen corresponding path program 1 times [2023-11-19 07:41:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:13,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895209388] [2023-11-19 07:41:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:13,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:13,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56691071] [2023-11-19 07:41:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:13,224 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:13,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-19 07:41:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:13,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:13,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:41:13,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895209388] [2023-11-19 07:41:15,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56691071] [2023-11-19 07:41:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56691071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:15,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:41:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370142488] [2023-11-19 07:41:15,878 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2023-11-19 07:41:15,879 INFO L87 Difference]: Start difference. First operand 761 states and 1040 transitions. Second operand has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:16,379 INFO L93 Difference]: Finished difference Result 793 states and 1053 transitions. [2023-11-19 07:41:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:16,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 75 [2023-11-19 07:41:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:16,385 INFO L225 Difference]: With dead ends: 793 [2023-11-19 07:41:16,385 INFO L226 Difference]: Without dead ends: 789 [2023-11-19 07:41:16,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=94, Unknown=1, NotChecked=0, Total=132 [2023-11-19 07:41:16,387 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 279 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 381 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:41:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-19 07:41:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 757. [2023-11-19 07:41:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 633 states have (on average 1.3886255924170616) internal successors, (879), 689 states have internal predecessors, (879), 70 states have call successors, (70), 6 states have call predecessors, (70), 6 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:41:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1019 transitions. [2023-11-19 07:41:16,500 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1019 transitions. Word has length 75 [2023-11-19 07:41:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:16,501 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1019 transitions. [2023-11-19 07:41:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1019 transitions. [2023-11-19 07:41:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:41:16,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:16,503 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:16,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:16,726 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:16,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1128548750, now seen corresponding path program 1 times [2023-11-19 07:41:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999914274] [2023-11-19 07:41:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:16,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790240284] [2023-11-19 07:41:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:16,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:16,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:16,742 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:16,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-19 07:41:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:16,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:41:16,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:41:17,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:17,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999914274] [2023-11-19 07:41:17,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790240284] [2023-11-19 07:41:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790240284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:17,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:41:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174028480] [2023-11-19 07:41:17,532 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:41:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:41:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:41:17,534 INFO L87 Difference]: Start difference. First operand 757 states and 1019 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:19,022 INFO L93 Difference]: Finished difference Result 1036 states and 1385 transitions. [2023-11-19 07:41:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:41:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2023-11-19 07:41:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:19,033 INFO L225 Difference]: With dead ends: 1036 [2023-11-19 07:41:19,033 INFO L226 Difference]: Without dead ends: 1028 [2023-11-19 07:41:19,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:41:19,036 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 589 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:19,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 288 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:41:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-11-19 07:41:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 952. [2023-11-19 07:41:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 808 states have (on average 1.4282178217821782) internal successors, (1154), 866 states have internal predecessors, (1154), 90 states have call successors, (90), 6 states have call predecessors, (90), 6 states have return successors, (90), 79 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 07:41:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1334 transitions. [2023-11-19 07:41:19,143 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1334 transitions. Word has length 76 [2023-11-19 07:41:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:19,144 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1334 transitions. [2023-11-19 07:41:19,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1334 transitions. [2023-11-19 07:41:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:41:19,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:19,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:19,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:19,369 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash -625272812, now seen corresponding path program 1 times [2023-11-19 07:41:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589070906] [2023-11-19 07:41:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054980718] [2023-11-19 07:41:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:19,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:19,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:41:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:41:19,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:41:20,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589070906] [2023-11-19 07:41:20,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:20,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054980718] [2023-11-19 07:41:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054980718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:20,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:41:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975363769] [2023-11-19 07:41:20,280 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:41:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:41:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:41:20,281 INFO L87 Difference]: Start difference. First operand 952 states and 1334 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:22,134 INFO L93 Difference]: Finished difference Result 1110 states and 1504 transitions. [2023-11-19 07:41:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:41:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 77 [2023-11-19 07:41:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:22,142 INFO L225 Difference]: With dead ends: 1110 [2023-11-19 07:41:22,142 INFO L226 Difference]: Without dead ends: 1108 [2023-11-19 07:41:22,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:41:22,144 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 555 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:22,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 339 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:41:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-19 07:41:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 999. [2023-11-19 07:41:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 850 states have (on average 1.4176470588235295) internal successors, (1205), 908 states have internal predecessors, (1205), 95 states have call successors, (95), 6 states have call predecessors, (95), 6 states have return successors, (95), 84 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 07:41:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1395 transitions. [2023-11-19 07:41:22,247 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1395 transitions. Word has length 77 [2023-11-19 07:41:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:22,248 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1395 transitions. [2023-11-19 07:41:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1395 transitions. [2023-11-19 07:41:22,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:41:22,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:22,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:22,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:22,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:22,471 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:22,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2091379380, now seen corresponding path program 1 times [2023-11-19 07:41:22,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:22,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651167673] [2023-11-19 07:41:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:22,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:22,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:22,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609281640] [2023-11-19 07:41:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:22,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:22,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:22,487 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:22,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-19 07:41:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:22,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:22,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:41:23,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:23,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:23,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651167673] [2023-11-19 07:41:23,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:23,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609281640] [2023-11-19 07:41:23,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609281640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:23,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:23,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:41:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872722321] [2023-11-19 07:41:23,434 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:23,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:41:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:41:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:41:23,436 INFO L87 Difference]: Start difference. First operand 999 states and 1395 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:25,079 INFO L93 Difference]: Finished difference Result 1114 states and 1499 transitions. [2023-11-19 07:41:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:41:25,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 78 [2023-11-19 07:41:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:25,091 INFO L225 Difference]: With dead ends: 1114 [2023-11-19 07:41:25,091 INFO L226 Difference]: Without dead ends: 1028 [2023-11-19 07:41:25,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:41:25,093 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 444 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:25,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 384 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:41:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-11-19 07:41:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 865. [2023-11-19 07:41:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 732 states have (on average 1.4221311475409837) internal successors, (1041), 788 states have internal predecessors, (1041), 79 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (79), 70 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-19 07:41:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1199 transitions. [2023-11-19 07:41:25,181 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1199 transitions. Word has length 78 [2023-11-19 07:41:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:25,182 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1199 transitions. [2023-11-19 07:41:25,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1199 transitions. [2023-11-19 07:41:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:41:25,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:25,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:25,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-19 07:41:25,403 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:25,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 408251414, now seen corresponding path program 1 times [2023-11-19 07:41:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632304623] [2023-11-19 07:41:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:25,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971222615] [2023-11-19 07:41:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:25,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:25,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:25,415 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:25,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:41:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:25,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:25,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:41:25,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632304623] [2023-11-19 07:41:25,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971222615] [2023-11-19 07:41:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971222615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:25,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:25,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:41:25,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60799644] [2023-11-19 07:41:25,961 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:25,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:25,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:25,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:25,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:41:25,963 INFO L87 Difference]: Start difference. First operand 865 states and 1199 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:26,569 INFO L93 Difference]: Finished difference Result 966 states and 1315 transitions. [2023-11-19 07:41:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 79 [2023-11-19 07:41:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:26,578 INFO L225 Difference]: With dead ends: 966 [2023-11-19 07:41:26,579 INFO L226 Difference]: Without dead ends: 962 [2023-11-19 07:41:26,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:41:26,580 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 349 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:26,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 379 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:41:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-11-19 07:41:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 927. [2023-11-19 07:41:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 790 states have (on average 1.4075949367088607) internal successors, (1112), 844 states have internal predecessors, (1112), 85 states have call successors, (85), 6 states have call predecessors, (85), 6 states have return successors, (85), 76 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-19 07:41:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1282 transitions. [2023-11-19 07:41:26,749 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1282 transitions. Word has length 79 [2023-11-19 07:41:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1282 transitions. [2023-11-19 07:41:26,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:41:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1282 transitions. [2023-11-19 07:41:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 07:41:26,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:26,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:26,959 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:26,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:26,959 INFO L85 PathProgramCache]: Analyzing trace with hash 806829775, now seen corresponding path program 1 times [2023-11-19 07:41:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628216561] [2023-11-19 07:41:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:26,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936324856] [2023-11-19 07:41:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:26,970 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:26,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-19 07:41:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:27,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:27,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-19 07:41:27,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628216561] [2023-11-19 07:41:29,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936324856] [2023-11-19 07:41:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936324856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:29,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:29,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:41:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458544865] [2023-11-19 07:41:29,679 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:29,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:41:29,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:41:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2023-11-19 07:41:29,680 INFO L87 Difference]: Start difference. First operand 927 states and 1282 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 07:41:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:30,554 INFO L93 Difference]: Finished difference Result 1206 states and 1664 transitions. [2023-11-19 07:41:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:41:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 85 [2023-11-19 07:41:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:30,563 INFO L225 Difference]: With dead ends: 1206 [2023-11-19 07:41:30,564 INFO L226 Difference]: Without dead ends: 1204 [2023-11-19 07:41:30,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2023-11-19 07:41:30,565 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 504 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:30,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 336 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:41:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-11-19 07:41:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1133. [2023-11-19 07:41:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 973 states have (on average 1.4419321685508737) internal successors, (1403), 1028 states have internal predecessors, (1403), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 98 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-19 07:41:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1619 transitions. [2023-11-19 07:41:30,678 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1619 transitions. Word has length 85 [2023-11-19 07:41:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:30,679 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1619 transitions. [2023-11-19 07:41:30,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 07:41:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1619 transitions. [2023-11-19 07:41:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 07:41:30,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:30,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-11-19 07:41:30,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:30,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:30,907 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-19 07:41:30,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash -758080672, now seen corresponding path program 1 times [2023-11-19 07:41:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597807143] [2023-11-19 07:41:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:30,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:30,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209054702] [2023-11-19 07:41:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:30,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:30,920 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:30,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cf364-8518-4772-b9a8-9a95c61d6809/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-19 07:41:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:30,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:41:30,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-19 07:41:31,434 INFO L327 TraceCheckSpWp]: Computing backward predicates...