./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/ps5-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps5-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:44,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:44,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:55:44,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:44,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:44,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:44,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:44,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:44,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:44,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:44,263 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:44,264 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:44,265 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:44,267 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:44,267 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:44,268 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:44,268 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:44,269 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:44,269 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:44,270 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:44,270 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:44,271 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:44,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:44,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:44,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:44,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:44,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:44,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:44,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:44,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:44,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:44,277 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:55:44,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:55:44,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:44,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:44,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:44,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:44,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:44,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:44,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:44,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:44,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:44,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:44,282 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:44,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:44,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:44,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:44,283 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:44,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:44,284 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed [2023-11-24 23:55:44,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:44,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:44,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:44,615 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:44,616 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:44,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench/ps5-ll.c [2023-11-24 23:55:47,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:47,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:47,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/sv-benchmarks/c/nla-digbench/ps5-ll.c [2023-11-24 23:55:47,978 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/data/eaa8c1fac/ccb0fa4c96f348a59dc671747c1bf108/FLAGf6cf5508e [2023-11-24 23:55:47,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/data/eaa8c1fac/ccb0fa4c96f348a59dc671747c1bf108 [2023-11-24 23:55:47,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:47,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:47,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:47,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:48,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:48,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:47" (1/1) ... [2023-11-24 23:55:48,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74af9820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48, skipping insertion in model container [2023-11-24 23:55:48,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:47" (1/1) ... [2023-11-24 23:55:48,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:48,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:48,218 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:48,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:48,254 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:48,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48 WrapperNode [2023-11-24 23:55:48,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:48,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:48,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:48,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:48,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,306 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 128 [2023-11-24 23:55:48,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:48,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:48,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:48,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:48,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:48,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:48,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:48,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:48,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (1/1) ... [2023-11-24 23:55:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:48,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:48,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:55:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:55:48,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:48,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:49,119 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:49,224 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:49,224 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:49,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49 BoogieIcfgContainer [2023-11-24 23:55:49,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:49,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:49,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:49,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:49,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:47" (1/3) ... [2023-11-24 23:55:49,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb1c89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:48" (2/3) ... [2023-11-24 23:55:49,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb1c89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49" (3/3) ... [2023-11-24 23:55:49,235 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll.c [2023-11-24 23:55:49,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:49,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2023-11-24 23:55:49,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:49,329 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=FINITE_AUTOMATA, 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;@a15a9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:49,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2023-11-24 23:55:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 173 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:55:49,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:49,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:55:49,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:49,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 251398, now seen corresponding path program 1 times [2023-11-24 23:55:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669504169] [2023-11-24 23:55:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:49,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669504169] [2023-11-24 23:55:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669504169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569063557] [2023-11-24 23:55:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:49,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:49,597 INFO L87 Difference]: Start difference. First operand has 178 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 173 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:50,271 INFO L93 Difference]: Finished difference Result 375 states and 426 transitions. [2023-11-24 23:55:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:50,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:55:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:50,292 INFO L225 Difference]: With dead ends: 375 [2023-11-24 23:55:50,293 INFO L226 Difference]: Without dead ends: 251 [2023-11-24 23:55:50,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:50,305 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 91 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:50,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 107 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:55:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-24 23:55:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 237. [2023-11-24 23:55:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 162 states have (on average 1.5246913580246915) internal successors, (247), 232 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 253 transitions. [2023-11-24 23:55:50,381 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 253 transitions. Word has length 3 [2023-11-24 23:55:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:50,381 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 253 transitions. [2023-11-24 23:55:50,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 253 transitions. [2023-11-24 23:55:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:55:50,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:50,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:50,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1947960354, now seen corresponding path program 1 times [2023-11-24 23:55:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573472737] [2023-11-24 23:55:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:50,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202261258] [2023-11-24 23:55:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:50,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:50,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:50,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:50,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:55:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:50,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:55:50,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:50,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:50,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:50,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573472737] [2023-11-24 23:55:50,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:50,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202261258] [2023-11-24 23:55:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202261258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:50,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:50,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539694398] [2023-11-24 23:55:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:50,630 INFO L87 Difference]: Start difference. First operand 237 states and 253 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:50,699 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2023-11-24 23:55:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-24 23:55:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:50,703 INFO L225 Difference]: With dead ends: 237 [2023-11-24 23:55:50,703 INFO L226 Difference]: Without dead ends: 234 [2023-11-24 23:55:50,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:50,705 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 124 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:50,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 135 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-24 23:55:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-24 23:55:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 162 states have (on average 1.4938271604938271) internal successors, (242), 229 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2023-11-24 23:55:50,725 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 31 [2023-11-24 23:55:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:50,725 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2023-11-24 23:55:50,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2023-11-24 23:55:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:55:50,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:50,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:50,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:50,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:50,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:50,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 257228938, now seen corresponding path program 1 times [2023-11-24 23:55:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346536959] [2023-11-24 23:55:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:50,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:50,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268825473] [2023-11-24 23:55:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:50,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:50,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:50,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:50,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:55:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:51,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:55:51,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:51,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:51,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346536959] [2023-11-24 23:55:51,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:51,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268825473] [2023-11-24 23:55:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268825473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:51,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262747475] [2023-11-24 23:55:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:51,110 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:51,231 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2023-11-24 23:55:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-24 23:55:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:51,234 INFO L225 Difference]: With dead ends: 259 [2023-11-24 23:55:51,235 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:55:51,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:51,237 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:51,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 269 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:55:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 234. [2023-11-24 23:55:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 162 states have (on average 1.4814814814814814) internal successors, (240), 229 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 246 transitions. [2023-11-24 23:55:51,270 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 246 transitions. Word has length 32 [2023-11-24 23:55:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:51,271 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 246 transitions. [2023-11-24 23:55:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 246 transitions. [2023-11-24 23:55:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:55:51,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:51,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:51,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:51,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:51,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:51,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -615837404, now seen corresponding path program 1 times [2023-11-24 23:55:51,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:51,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435997118] [2023-11-24 23:55:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:51,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:51,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082210263] [2023-11-24 23:55:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:51,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:55:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:51,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:51,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:51,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:51,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435997118] [2023-11-24 23:55:51,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082210263] [2023-11-24 23:55:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082210263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319941679] [2023-11-24 23:55:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:51,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:51,691 INFO L87 Difference]: Start difference. First operand 234 states and 246 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:52,256 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2023-11-24 23:55:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-24 23:55:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:52,259 INFO L225 Difference]: With dead ends: 257 [2023-11-24 23:55:52,259 INFO L226 Difference]: Without dead ends: 252 [2023-11-24 23:55:52,260 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 [2023-11-24 23:55:52,261 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 86 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:52,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 217 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:55:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-24 23:55:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 237. [2023-11-24 23:55:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 165 states have (on average 1.4545454545454546) internal successors, (240), 232 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 246 transitions. [2023-11-24 23:55:52,285 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 246 transitions. Word has length 33 [2023-11-24 23:55:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:52,286 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 246 transitions. [2023-11-24 23:55:52,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 246 transitions. [2023-11-24 23:55:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:55:52,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:52,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:52,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:52,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:52,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:52,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1911090228, now seen corresponding path program 1 times [2023-11-24 23:55:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:52,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293966822] [2023-11-24 23:55:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:52,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:52,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713156071] [2023-11-24 23:55:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:52,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:52,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:52,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:52,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:55:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:52,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:52,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:52,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:52,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293966822] [2023-11-24 23:55:52,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713156071] [2023-11-24 23:55:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713156071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:52,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150088747] [2023-11-24 23:55:52,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:52,700 INFO L87 Difference]: Start difference. First operand 237 states and 246 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:53,026 INFO L93 Difference]: Finished difference Result 237 states and 246 transitions. [2023-11-24 23:55:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:53,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-24 23:55:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:53,028 INFO L225 Difference]: With dead ends: 237 [2023-11-24 23:55:53,028 INFO L226 Difference]: Without dead ends: 183 [2023-11-24 23:55:53,029 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 [2023-11-24 23:55:53,030 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 125 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:53,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 34 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-24 23:55:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-24 23:55:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 131 states have (on average 1.3893129770992367) internal successors, (182), 178 states have internal predecessors, (182), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2023-11-24 23:55:53,052 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 34 [2023-11-24 23:55:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:53,052 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2023-11-24 23:55:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2023-11-24 23:55:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:55:53,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:53,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:53,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:53,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:53,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1708344580, now seen corresponding path program 1 times [2023-11-24 23:55:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526907884] [2023-11-24 23:55:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:53,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:53,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499537756] [2023-11-24 23:55:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:53,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:53,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:55:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:53,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:55:53,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:53,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:53,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526907884] [2023-11-24 23:55:53,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:53,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499537756] [2023-11-24 23:55:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499537756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:53,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:53,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60160700] [2023-11-24 23:55:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:53,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:53,413 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:53,431 INFO L93 Difference]: Finished difference Result 183 states and 188 transitions. [2023-11-24 23:55:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-24 23:55:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:53,433 INFO L225 Difference]: With dead ends: 183 [2023-11-24 23:55:53,433 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 23:55:53,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:53,435 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 96 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:53,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 134 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 23:55:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-24 23:55:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 177 states have internal predecessors, (180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 186 transitions. [2023-11-24 23:55:53,449 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 186 transitions. Word has length 41 [2023-11-24 23:55:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:53,451 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 186 transitions. [2023-11-24 23:55:53,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 186 transitions. [2023-11-24 23:55:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:55:53,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:53,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:53,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:55:53,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:53,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1419074302, now seen corresponding path program 1 times [2023-11-24 23:55:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400653849] [2023-11-24 23:55:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:53,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372725880] [2023-11-24 23:55:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:53,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:53,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:55:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:53,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:55:53,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:53,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:53,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400653849] [2023-11-24 23:55:53,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372725880] [2023-11-24 23:55:53,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372725880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:53,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857814877] [2023-11-24 23:55:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:53,801 INFO L87 Difference]: Start difference. First operand 182 states and 186 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:53,822 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2023-11-24 23:55:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-11-24 23:55:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:53,826 INFO L225 Difference]: With dead ends: 183 [2023-11-24 23:55:53,826 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 23:55:53,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:53,830 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:53,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 23:55:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-24 23:55:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 131 states have (on average 1.366412213740458) internal successors, (179), 177 states have internal predecessors, (179), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2023-11-24 23:55:53,861 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 42 [2023-11-24 23:55:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:53,862 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2023-11-24 23:55:53,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2023-11-24 23:55:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:55:53,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:53,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:53,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:54,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:54,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash -68649978, now seen corresponding path program 1 times [2023-11-24 23:55:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833201542] [2023-11-24 23:55:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:54,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:54,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221024166] [2023-11-24 23:55:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:54,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:54,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:55:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:54,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:54,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:54,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:54,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833201542] [2023-11-24 23:55:54,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221024166] [2023-11-24 23:55:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221024166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:54,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578587596] [2023-11-24 23:55:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:54,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:54,268 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:54,702 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2023-11-24 23:55:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:54,703 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-11-24 23:55:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:54,705 INFO L225 Difference]: With dead ends: 313 [2023-11-24 23:55:54,705 INFO L226 Difference]: Without dead ends: 275 [2023-11-24 23:55:54,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:54,707 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 94 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:54,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 92 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:55:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-24 23:55:54,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 264. [2023-11-24 23:55:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 257 states have internal predecessors, (268), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:55:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 278 transitions. [2023-11-24 23:55:54,724 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 278 transitions. Word has length 46 [2023-11-24 23:55:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:54,728 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 278 transitions. [2023-11-24 23:55:54,728 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 278 transitions. [2023-11-24 23:55:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:55:54,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:54,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:54,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-24 23:55:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:54,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:54,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 535718540, now seen corresponding path program 1 times [2023-11-24 23:55:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187247702] [2023-11-24 23:55:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:54,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750100427] [2023-11-24 23:55:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:54,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:54,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:54,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:55:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:55,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:55,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:55,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:55,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187247702] [2023-11-24 23:55:55,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750100427] [2023-11-24 23:55:55,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750100427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:55,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:55,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:55,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523607284] [2023-11-24 23:55:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:55,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:55,115 INFO L87 Difference]: Start difference. First operand 264 states and 278 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:55,214 INFO L93 Difference]: Finished difference Result 265 states and 278 transitions. [2023-11-24 23:55:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-24 23:55:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:55,217 INFO L225 Difference]: With dead ends: 265 [2023-11-24 23:55:55,217 INFO L226 Difference]: Without dead ends: 264 [2023-11-24 23:55:55,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:55,220 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:55,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 215 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-24 23:55:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-24 23:55:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 257 states have internal predecessors, (267), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:55:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 277 transitions. [2023-11-24 23:55:55,235 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 277 transitions. Word has length 52 [2023-11-24 23:55:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:55,235 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 277 transitions. [2023-11-24 23:55:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 277 transitions. [2023-11-24 23:55:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:55:55,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:55,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:55:55,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:55,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:55:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1787075070, now seen corresponding path program 1 times [2023-11-24 23:55:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330467921] [2023-11-24 23:55:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:55,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:55,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062053592] [2023-11-24 23:55:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:55,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:55,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:55,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:55,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:55:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:55,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:55:55,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:55,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:56,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330467921] [2023-11-24 23:55:56,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062053592] [2023-11-24 23:55:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062053592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80246676] [2023-11-24 23:55:56,074 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-24 23:55:56,074 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:56,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:56,084 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:56,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:00,501 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2023-11-24 23:56:00,546 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:56:10,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6073#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 307445734561825861 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (<= |ULTIMATE.start_main_~k~0#1| 256))' at error location [2023-11-24 23:56:10,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:56:10,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:56:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-24 23:56:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544684636] [2023-11-24 23:56:10,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:10,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:10,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:56:10,010 INFO L87 Difference]: Start difference. First operand 264 states and 277 transitions. Second operand has 8 states, 7 states have (on average 23.0) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:56:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:10,936 INFO L93 Difference]: Finished difference Result 334 states and 340 transitions. [2023-11-24 23:56:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:56:10,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 23.0) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2023-11-24 23:56:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:10,939 INFO L225 Difference]: With dead ends: 334 [2023-11-24 23:56:10,939 INFO L226 Difference]: Without dead ends: 331 [2023-11-24 23:56:10,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 171 SyntacticMatches, 58 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-24 23:56:10,941 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 296 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:10,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 232 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:56:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-24 23:56:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 303. [2023-11-24 23:56:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 251 states have (on average 1.294820717131474) internal successors, (325), 296 states have internal predecessors, (325), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:56:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 335 transitions. [2023-11-24 23:56:10,957 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 335 transitions. Word has length 83 [2023-11-24 23:56:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:10,957 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 335 transitions. [2023-11-24 23:56:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 23.0) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:56:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 335 transitions. [2023-11-24 23:56:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:56:10,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:10,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:56:10,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:11,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:56:11,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:56:11,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash 435247788, now seen corresponding path program 1 times [2023-11-24 23:56:11,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:11,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835757742] [2023-11-24 23:56:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:11,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:11,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:56:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417254665] [2023-11-24 23:56:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:11,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:11,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:11,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:56:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:11,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:56:11,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:11,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:13,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835757742] [2023-11-24 23:56:13,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:56:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417254665] [2023-11-24 23:56:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417254665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245934709] [2023-11-24 23:56:13,038 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-24 23:56:13,038 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:56:13,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:56:13,039 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:56:13,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:15,933 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2023-11-24 23:56:15,959 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:56:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1245934709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 16 [2023-11-24 23:56:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667795005] [2023-11-24 23:56:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:56:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:56:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=332, Unknown=1, NotChecked=0, Total=462 [2023-11-24 23:56:32,484 INFO L87 Difference]: Start difference. First operand 303 states and 335 transitions. Second operand has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:56:35,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:56:38,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:56:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:39,140 INFO L93 Difference]: Finished difference Result 303 states and 335 transitions. [2023-11-24 23:56:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-11-24 23:56:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:39,142 INFO L225 Difference]: With dead ends: 303 [2023-11-24 23:56:39,142 INFO L226 Difference]: Without dead ends: 184 [2023-11-24 23:56:39,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 134 SyntacticMatches, 59 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=247, Invalid=622, Unknown=1, NotChecked=0, Total=870 [2023-11-24 23:56:39,144 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 322 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 56 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:39,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 18 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 917 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-11-24 23:56:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-24 23:56:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-24 23:56:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 179 states have internal predecessors, (182), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:56:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 188 transitions. [2023-11-24 23:56:39,157 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 188 transitions. Word has length 84 [2023-11-24 23:56:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:39,157 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 188 transitions. [2023-11-24 23:56:39,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:56:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 188 transitions. [2023-11-24 23:56:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 23:56:39,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:39,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:56:39,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:39,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:39,366 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:56:39,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1174182324, now seen corresponding path program 1 times [2023-11-24 23:56:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:39,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129487113] [2023-11-24 23:56:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:39,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:56:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71296885] [2023-11-24 23:56:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:39,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:39,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:39,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:39,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583ff98e-6a3d-4f87-bb8a-ce2f68801bc5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:56:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:39,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:56:39,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:39,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:40,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129487113] [2023-11-24 23:56:40,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:56:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71296885] [2023-11-24 23:56:40,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71296885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188799013] [2023-11-24 23:56:40,017 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-24 23:56:40,018 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:56:40,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:56:40,018 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:56:40,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:42,285 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2023-11-24 23:56:42,311 INFO L180 IcfgInterpreter]: Interpretation finished