./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.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_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/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_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/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_053ae1e5-f14c-45ce-a2af-b3972da4f139/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 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:54,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:54,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:58:54,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:54,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:54,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:54,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:54,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:54,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:54,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:54,515 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:54,516 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:54,516 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:54,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:58:54,518 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:54,519 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:54,519 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:58:54,520 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:58:54,520 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:54,520 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:58:54,521 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:58:54,521 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:58:54,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:54,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:54,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:58:54,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:58:54,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:58:54,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:54,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:54,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:54,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:54,526 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:58:54,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:58:54,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:58:54,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:54,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:54,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:54,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:54,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:54,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:54,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:54,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:54,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:58:54,530 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:58:54,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:58:54,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:54,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:58:54,531 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:54,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:54,531 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_053ae1e5-f14c-45ce-a2af-b3972da4f139/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 [2023-11-24 23:58:54,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:54,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:54,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:54,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:54,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:54,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-24 23:58:57,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:58,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:58,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-24 23:58:58,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/data/4fc195e82/e66abd4a2fb34960b8c0a474e6ba9ecc/FLAGd49d215a5 [2023-11-24 23:58:58,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/data/4fc195e82/e66abd4a2fb34960b8c0a474e6ba9ecc [2023-11-24 23:58:58,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:58,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:58,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:58,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:58,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:58,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a44356c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58, skipping insertion in model container [2023-11-24 23:58:58,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:58,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:58,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:58:58,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:58,428 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:58:58,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58 WrapperNode [2023-11-24 23:58:58,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:58,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:58,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:58:58,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:58:58,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,493 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2023-11-24 23:58:58,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:58,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:58:58,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:58:58,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:58:58,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:58:58,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:58:58,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:58:58,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:58:58,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (1/1) ... [2023-11-24 23:58:58,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:58,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:58:58,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:58:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:58:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:58:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:58:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:58:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:58:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:58:58,690 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:58:58,696 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:58:58,917 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:58:58,989 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:58:58,989 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:58:58,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:58 BoogieIcfgContainer [2023-11-24 23:58:58,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:58:58,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:58:58,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:58:58,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:58:58,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:58:58" (1/3) ... [2023-11-24 23:58:58,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a7d1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:58, skipping insertion in model container [2023-11-24 23:58:58,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:58" (2/3) ... [2023-11-24 23:58:58,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a7d1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:58, skipping insertion in model container [2023-11-24 23:58:59,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:58" (3/3) ... [2023-11-24 23:58:59,004 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound10.c [2023-11-24 23:58:59,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:58:59,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:58:59,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:58:59,084 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;@3a3b7808, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:58:59,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:58:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 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 23:58:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:58:59,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:59,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:58:59,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:58:59,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 99560, now seen corresponding path program 1 times [2023-11-24 23:58:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:58:59,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540295639] [2023-11-24 23:58:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:58:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:59,259 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 23:58:59,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:58:59,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540295639] [2023-11-24 23:58:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540295639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:58:59,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354110782] [2023-11-24 23:58:59,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:59,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:58:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:58:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:58:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:58:59,295 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 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) Second operand has 2 states, 1 states have (on average 3.0) 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 23:58:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:59,324 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-24 23:58:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:58:59,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) 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 23:58:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:59,334 INFO L225 Difference]: With dead ends: 29 [2023-11-24 23:58:59,334 INFO L226 Difference]: Without dead ends: 16 [2023-11-24 23:58:59,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:58:59,340 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:58:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-24 23:58:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-24 23:58:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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 23:58:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-24 23:58:59,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2023-11-24 23:58:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:59,378 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-24 23:58:59,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) 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 23:58:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-24 23:58:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:58:59,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:59,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:58:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:58:59,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:58:59,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 3086412, now seen corresponding path program 1 times [2023-11-24 23:58:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:58:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9935203] [2023-11-24 23:58:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:58:59,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:58:59,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104224225] [2023-11-24 23:58:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:59,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:58:59,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:59,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:58:59,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:58:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:59,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:58:59,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:59,484 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 23:58:59,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:59,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:58:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9935203] [2023-11-24 23:58:59,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:58:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104224225] [2023-11-24 23:58:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104224225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:59,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:58:59,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027102942] [2023-11-24 23:58:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:59,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:58:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:58:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:58:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:58:59,490 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:59,529 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-11-24 23:58:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:58:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:58:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:59,535 INFO L225 Difference]: With dead ends: 29 [2023-11-24 23:58:59,535 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 23:58:59,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:58:59,538 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:59,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:58:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 23:58:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-24 23:58:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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 23:58:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-24 23:58:59,547 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2023-11-24 23:58:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:59,547 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-24 23:58:59,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-24 23:58:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:58:59,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:59,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:59,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:59,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:58:59,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:58:59,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1375170262, now seen corresponding path program 1 times [2023-11-24 23:58:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:58:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118480366] [2023-11-24 23:58:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:58:59,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:58:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447434216] [2023-11-24 23:58:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:59,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:58:59,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:59,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:58:59,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:58:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:59,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:58:59,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:58:59,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:00,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118480366] [2023-11-24 23:59:00,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447434216] [2023-11-24 23:59:00,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447434216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:00,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386258611] [2023-11-24 23:59:00,102 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:00,103 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:00,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:00,113 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:00,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:01,126 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:01,130 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:01,425 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '232#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:01,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:01,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:59:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-24 23:59:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120496586] [2023-11-24 23:59:01,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:59:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:59:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:59:01,434 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 23:59:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:01,531 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-11-24 23:59:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:59:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 13 [2023-11-24 23:59:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:01,533 INFO L225 Difference]: With dead ends: 45 [2023-11-24 23:59:01,533 INFO L226 Difference]: Without dead ends: 35 [2023-11-24 23:59:01,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:59:01,535 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:01,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-24 23:59:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-24 23:59:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:59:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-24 23:59:01,550 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2023-11-24 23:59:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:01,555 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-24 23:59:01,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 23:59:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-11-24 23:59:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:59:01,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:01,558 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-24 23:59:01,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:01,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:01,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:01,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1100889804, now seen corresponding path program 2 times [2023-11-24 23:59:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689913573] [2023-11-24 23:59:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:01,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:01,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311064874] [2023-11-24 23:59:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:59:01,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:01,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:01,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:59:02,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:59:02,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:02,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:59:02,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:59:02,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:02,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689913573] [2023-11-24 23:59:02,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311064874] [2023-11-24 23:59:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311064874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750765925] [2023-11-24 23:59:02,627 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:02,628 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:02,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:02,628 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:02,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:03,117 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:03,120 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:03,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '517#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:03,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:03,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:59:03,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-24 23:59:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976188222] [2023-11-24 23:59:03,469 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:03,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:59:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:59:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:59:03,471 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:59:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:03,638 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-11-24 23:59:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:59:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2023-11-24 23:59:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:03,641 INFO L225 Difference]: With dead ends: 47 [2023-11-24 23:59:03,641 INFO L226 Difference]: Without dead ends: 46 [2023-11-24 23:59:03,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-24 23:59:03,643 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:03,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 19 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:59:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-24 23:59:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2023-11-24 23:59:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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 23:59:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-24 23:59:03,655 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 40 [2023-11-24 23:59:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:03,656 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-24 23:59:03,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:59:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-24 23:59:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 23:59:03,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:03,658 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1] [2023-11-24 23:59:03,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:59:03,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:03,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:03,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1223399510, now seen corresponding path program 3 times [2023-11-24 23:59:03,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:03,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334969147] [2023-11-24 23:59:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:03,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756478674] [2023-11-24 23:59:03,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:59:03,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:03,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:03,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:59:03,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:59:03,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:03,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:59:03,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:59:04,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:59:04,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334969147] [2023-11-24 23:59:04,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756478674] [2023-11-24 23:59:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756478674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [988970812] [2023-11-24 23:59:04,321 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:04,322 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:04,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:04,322 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:04,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:04,774 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:04,776 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:05,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '947#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:05,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:05,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:59:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-24 23:59:05,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200254712] [2023-11-24 23:59:05,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:59:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:59:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:59:05,212 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:59:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:05,602 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2023-11-24 23:59:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:59:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 49 [2023-11-24 23:59:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:05,605 INFO L225 Difference]: With dead ends: 92 [2023-11-24 23:59:05,605 INFO L226 Difference]: Without dead ends: 91 [2023-11-24 23:59:05,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:59:05,606 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:05,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 150 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-24 23:59:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-24 23:59:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 23:59:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2023-11-24 23:59:05,625 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 49 [2023-11-24 23:59:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:05,625 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2023-11-24 23:59:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:59:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2023-11-24 23:59:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 23:59:05,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:05,628 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1] [2023-11-24 23:59:05,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:05,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:05,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 696830924, now seen corresponding path program 4 times [2023-11-24 23:59:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893443562] [2023-11-24 23:59:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:05,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652041185] [2023-11-24 23:59:05,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:59:05,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:05,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:05,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:05,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:59:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:05,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:59:05,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-24 23:59:06,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-24 23:59:06,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893443562] [2023-11-24 23:59:06,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652041185] [2023-11-24 23:59:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652041185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351659407] [2023-11-24 23:59:06,915 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:06,916 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:06,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:06,916 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:06,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:07,242 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:07,244 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:08,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1892#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:08,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:08,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:59:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-24 23:59:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922231242] [2023-11-24 23:59:08,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-24 23:59:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-24 23:59:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2023-11-24 23:59:08,343 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 28 states, 27 states have (on average 5.666666666666667) internal successors, (153), 28 states have internal predecessors, (153), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:59:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:09,856 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2023-11-24 23:59:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-24 23:59:09,857 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.666666666666667) internal successors, (153), 28 states have internal predecessors, (153), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 112 [2023-11-24 23:59:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:09,859 INFO L225 Difference]: With dead ends: 190 [2023-11-24 23:59:09,859 INFO L226 Difference]: Without dead ends: 189 [2023-11-24 23:59:09,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 289 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=577, Invalid=1493, Unknown=0, NotChecked=0, Total=2070 [2023-11-24 23:59:09,862 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:09,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 572 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:59:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-24 23:59:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-24 23:59:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:59:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 214 transitions. [2023-11-24 23:59:09,913 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 214 transitions. Word has length 112 [2023-11-24 23:59:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:09,915 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 214 transitions. [2023-11-24 23:59:09,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.666666666666667) internal successors, (153), 28 states have internal predecessors, (153), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:59:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 214 transitions. [2023-11-24 23:59:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-24 23:59:09,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:09,926 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1] [2023-11-24 23:59:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:10,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:10,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1877162636, now seen corresponding path program 5 times [2023-11-24 23:59:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248294578] [2023-11-24 23:59:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:10,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:10,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774635641] [2023-11-24 23:59:10,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:59:10,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:10,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:10,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:10,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:59:10,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-11-24 23:59:10,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:10,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-24 23:59:10,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 2353 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-11-24 23:59:11,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:11,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248294578] [2023-11-24 23:59:11,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774635641] [2023-11-24 23:59:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774635641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:59:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1174989718] [2023-11-24 23:59:11,741 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:11,741 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:11,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:11,742 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:11,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:12,038 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:12,040 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:13,639 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3202#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:13,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:13,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:59:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-24 23:59:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808028541] [2023-11-24 23:59:13,640 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-24 23:59:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-24 23:59:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=1087, Unknown=0, NotChecked=0, Total=1560 [2023-11-24 23:59:13,645 INFO L87 Difference]: Start difference. First operand 189 states and 214 transitions. Second operand has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:59:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:14,980 INFO L93 Difference]: Finished difference Result 201 states and 228 transitions. [2023-11-24 23:59:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-24 23:59:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 238 [2023-11-24 23:59:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:14,991 INFO L225 Difference]: With dead ends: 201 [2023-11-24 23:59:14,991 INFO L226 Difference]: Without dead ends: 200 [2023-11-24 23:59:14,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 426 SyntacticMatches, 27 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1357, Invalid=2933, Unknown=0, NotChecked=0, Total=4290 [2023-11-24 23:59:14,997 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 133 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:14,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 68 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:59:15,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-24 23:59:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 196. [2023-11-24 23:59:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-24 23:59:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 222 transitions. [2023-11-24 23:59:15,053 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 222 transitions. Word has length 238 [2023-11-24 23:59:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:15,055 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 222 transitions. [2023-11-24 23:59:15,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:59:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 222 transitions. [2023-11-24 23:59:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-24 23:59:15,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:15,063 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 1, 1] [2023-11-24 23:59:15,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:15,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:59:15,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:15,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash 539350166, now seen corresponding path program 6 times [2023-11-24 23:59:15,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48480547] [2023-11-24 23:59:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:15,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:15,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233465652] [2023-11-24 23:59:15,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:59:15,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:15,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:15,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:15,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:59:15,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:59:15,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:59:15,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-24 23:59:15,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 2538 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-24 23:59:16,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 2538 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-24 23:59:18,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48480547] [2023-11-24 23:59:18,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233465652] [2023-11-24 23:59:18,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233465652] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:18,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1486947679] [2023-11-24 23:59:18,537 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:18,538 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:18,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:18,538 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:18,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:18,817 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:18,819 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:22,221 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5304#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:22,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:22,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:59:22,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-11-24 23:59:22,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746057681] [2023-11-24 23:59:22,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-24 23:59:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-24 23:59:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2023-11-24 23:59:22,233 INFO L87 Difference]: Start difference. First operand 196 states and 222 transitions. Second operand has 58 states, 57 states have (on average 5.842105263157895) internal successors, (333), 58 states have internal predecessors, (333), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-24 23:59:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:29,315 INFO L93 Difference]: Finished difference Result 400 states and 483 transitions. [2023-11-24 23:59:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-24 23:59:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 5.842105263157895) internal successors, (333), 58 states have internal predecessors, (333), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 247 [2023-11-24 23:59:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:29,321 INFO L225 Difference]: With dead ends: 400 [2023-11-24 23:59:29,321 INFO L226 Difference]: Without dead ends: 399 [2023-11-24 23:59:29,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 649 SyntacticMatches, 28 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2482, Invalid=5708, Unknown=0, NotChecked=0, Total=8190 [2023-11-24 23:59:29,325 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 90 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 4145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:29,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2464 Invalid, 4145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 23:59:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-24 23:59:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2023-11-24 23:59:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 341 states have (on average 1.002932551319648) internal successors, (342), 341 states have internal predecessors, (342), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-24 23:59:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 454 transitions. [2023-11-24 23:59:29,368 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 454 transitions. Word has length 247 [2023-11-24 23:59:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:29,369 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 454 transitions. [2023-11-24 23:59:29,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 5.842105263157895) internal successors, (333), 58 states have internal predecessors, (333), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-24 23:59:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 454 transitions. [2023-11-24 23:59:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-11-24 23:59:29,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:29,382 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 56, 56, 1, 1] [2023-11-24 23:59:29,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:29,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:59:29,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash -264146100, now seen corresponding path program 7 times [2023-11-24 23:59:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693021911] [2023-11-24 23:59:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:29,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:59:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219897976] [2023-11-24 23:59:29,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:59:29,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:29,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:29,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:29,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053ae1e5-f14c-45ce-a2af-b3972da4f139/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:59:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:29,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-24 23:59:29,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 10948 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2023-11-24 23:59:32,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 10948 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2023-11-24 23:59:39,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693021911] [2023-11-24 23:59:39,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:59:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219897976] [2023-11-24 23:59:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219897976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:39,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [836291082] [2023-11-24 23:59:39,693 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:59:39,693 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:59:39,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:59:39,694 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:59:39,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:59:39,956 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-24 23:59:39,958 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:59:53,249 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9549#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:59:53,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:59:53,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:59:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2023-11-24 23:59:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417378078] [2023-11-24 23:59:53,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:53,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-11-24 23:59:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-11-24 23:59:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3497, Invalid=11265, Unknown=0, NotChecked=0, Total=14762 [2023-11-24 23:59:53,263 INFO L87 Difference]: Start difference. First operand 399 states and 454 transitions. Second operand has 116 states, 115 states have (on average 5.921739130434783) internal successors, (681), 116 states have internal predecessors, (681), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112)