./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/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_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/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_c4bf863c-ab36-4d37-bf64-3132c1f3930f/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 462bdab67ac93ddd789186f30bfdfc189629d2959c27ec219da5960b800d2042 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:23,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:23,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:54:23,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:23,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:23,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:23,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:23,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:23,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:23,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:23,203 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:23,204 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:23,205 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:23,205 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:23,206 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:23,207 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:23,207 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:23,208 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:23,209 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:23,209 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:23,210 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:23,211 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:23,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:23,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:23,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:23,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:23,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:23,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:23,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:23,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:23,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:23,217 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:54:23,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:23,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:23,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:23,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:23,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:23,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:23,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:23,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:23,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:23,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:23,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:54:23,223 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:23,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:23,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:23,225 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:54:23,225 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:23,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:23,226 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_c4bf863c-ab36-4d37-bf64-3132c1f3930f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462bdab67ac93ddd789186f30bfdfc189629d2959c27ec219da5960b800d2042 [2023-11-24 23:54:23,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:23,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:23,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:23,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:23,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:23,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound50.i [2023-11-24 23:54:26,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:27,264 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:27,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound50.i [2023-11-24 23:54:27,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/data/9b1ac4e2e/902c0c94cc7b49f1836da7dd1c8eddf2/FLAG6010857c1 [2023-11-24 23:54:27,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/data/9b1ac4e2e/902c0c94cc7b49f1836da7dd1c8eddf2 [2023-11-24 23:54:27,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:27,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:27,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:27,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:27,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:27,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635263b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27, skipping insertion in model container [2023-11-24 23:54:27,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:27,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:27,527 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:54:27,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:27,562 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:54:27,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27 WrapperNode [2023-11-24 23:54:27,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:27,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:27,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:54:27,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:54:27,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,611 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-11-24 23:54:27,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:27,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:54:27,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:54:27,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:54:27,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:54:27,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:54:27,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:54:27,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:54:27,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (1/1) ... [2023-11-24 23:54:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:27,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:54:27,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:54:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:54:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:54:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:54:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:54:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:54:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:54:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:54:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:54:27,802 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:54:27,804 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:54:27,978 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:54:28,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:54:28,047 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:54:28,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:28 BoogieIcfgContainer [2023-11-24 23:54:28,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:54:28,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:54:28,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:54:28,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:54:28,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:54:27" (1/3) ... [2023-11-24 23:54:28,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1928be62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:28, skipping insertion in model container [2023-11-24 23:54:28,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:27" (2/3) ... [2023-11-24 23:54:28,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1928be62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:28, skipping insertion in model container [2023-11-24 23:54:28,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:28" (3/3) ... [2023-11-24 23:54:28,060 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound50.i [2023-11-24 23:54:28,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:54:28,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-24 23:54:28,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:54:28,134 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;@11e74f3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:54:28,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 23:54:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:54:28,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:28,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:28,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:28,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1956967140, now seen corresponding path program 1 times [2023-11-24 23:54:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327692818] [2023-11-24 23:54:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:28,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:28,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327692818] [2023-11-24 23:54:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327692818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:28,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:28,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:54:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19783007] [2023-11-24 23:54:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:28,689 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:28,800 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-11-24 23:54:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:54:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-24 23:54:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:28,820 INFO L225 Difference]: With dead ends: 45 [2023-11-24 23:54:28,821 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 23:54:28,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:28,832 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 23:54:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-24 23:54:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-24 23:54:28,898 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2023-11-24 23:54:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:28,900 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-24 23:54:28,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-11-24 23:54:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:54:28,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:28,904 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:54:28,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:28,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1312184013, now seen corresponding path program 1 times [2023-11-24 23:54:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243717754] [2023-11-24 23:54:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:29,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243717754] [2023-11-24 23:54:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243717754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:29,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:29,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:54:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942715268] [2023-11-24 23:54:29,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:54:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:54:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:29,280 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:29,465 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2023-11-24 23:54:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:54:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-24 23:54:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:29,468 INFO L225 Difference]: With dead ends: 43 [2023-11-24 23:54:29,468 INFO L226 Difference]: Without dead ends: 42 [2023-11-24 23:54:29,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:29,471 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:29,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 63 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-24 23:54:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-11-24 23:54:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.32) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-24 23:54:29,490 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2023-11-24 23:54:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:29,491 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-24 23:54:29,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-24 23:54:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:54:29,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:29,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:54:29,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:29,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1312185263, now seen corresponding path program 1 times [2023-11-24 23:54:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714931709] [2023-11-24 23:54:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:29,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:29,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714931709] [2023-11-24 23:54:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714931709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250030416] [2023-11-24 23:54:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:29,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:29,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:29,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:54:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:29,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:54:29,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:29,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250030416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:29,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:54:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-24 23:54:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482092598] [2023-11-24 23:54:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:29,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:54:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:54:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:29,946 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:30,074 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-11-24 23:54:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:54:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-24 23:54:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:30,079 INFO L225 Difference]: With dead ends: 44 [2023-11-24 23:54:30,080 INFO L226 Difference]: Without dead ends: 43 [2023-11-24 23:54:30,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:54:30,086 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:30,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-24 23:54:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2023-11-24 23:54:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-24 23:54:30,103 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 15 [2023-11-24 23:54:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:30,104 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-24 23:54:30,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-24 23:54:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:54:30,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:30,108 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:30,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:30,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:30,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2022998804, now seen corresponding path program 1 times [2023-11-24 23:54:30,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:30,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985321033] [2023-11-24 23:54:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:30,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:30,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985321033] [2023-11-24 23:54:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985321033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:54:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503549944] [2023-11-24 23:54:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:30,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:54:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:54:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:30,517 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:30,624 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-24 23:54:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:54:30,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-24 23:54:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:30,629 INFO L225 Difference]: With dead ends: 44 [2023-11-24 23:54:30,629 INFO L226 Difference]: Without dead ends: 43 [2023-11-24 23:54:30,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:30,640 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:30,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-24 23:54:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-11-24 23:54:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-24 23:54:30,649 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16 [2023-11-24 23:54:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:30,650 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-24 23:54:30,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-24 23:54:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:54:30,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:30,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:30,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:54:30,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:30,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:30,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2023037533, now seen corresponding path program 1 times [2023-11-24 23:54:30,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364532159] [2023-11-24 23:54:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:30,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364532159] [2023-11-24 23:54:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364532159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176476990] [2023-11-24 23:54:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:30,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:30,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:30,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:54:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:30,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:54:30,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:30,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176476990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1377544152] [2023-11-24 23:54:30,994 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-24 23:54:30,994 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:30,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:31,004 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:31,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:31,871 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:31,874 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:32,198 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '622#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post3#1|))' at error location [2023-11-24 23:54:32,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:32,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 12 [2023-11-24 23:54:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068668011] [2023-11-24 23:54:32,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:32,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:54:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:54:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-24 23:54:32,203 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:32,403 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2023-11-24 23:54:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:54:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 16 [2023-11-24 23:54:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:32,408 INFO L225 Difference]: With dead ends: 72 [2023-11-24 23:54:32,412 INFO L226 Difference]: Without dead ends: 61 [2023-11-24 23:54:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:54:32,414 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:32,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 95 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-24 23:54:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-11-24 23:54:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-24 23:54:32,439 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 16 [2023-11-24 23:54:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:32,444 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-24 23:54:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-24 23:54:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:54:32,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:32,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:32,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:32,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:32,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1716669214, now seen corresponding path program 1 times [2023-11-24 23:54:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:32,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157294852] [2023-11-24 23:54:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:32,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157294852] [2023-11-24 23:54:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157294852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070080889] [2023-11-24 23:54:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:32,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:32,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:32,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:54:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:32,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:54:32,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:32,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070080889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:32,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:54:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-11-24 23:54:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388442547] [2023-11-24 23:54:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:54:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:32,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:54:32,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:54:32,978 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:33,134 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2023-11-24 23:54:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 23:54:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-24 23:54:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:33,139 INFO L225 Difference]: With dead ends: 52 [2023-11-24 23:54:33,139 INFO L226 Difference]: Without dead ends: 51 [2023-11-24 23:54:33,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:54:33,142 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:33,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 59 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-24 23:54:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2023-11-24 23:54:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-24 23:54:33,163 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2023-11-24 23:54:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:33,163 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-24 23:54:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-24 23:54:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:54:33,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:33,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:33,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:33,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:33,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:33,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1677138017, now seen corresponding path program 1 times [2023-11-24 23:54:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:33,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959612102] [2023-11-24 23:54:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:33,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959612102] [2023-11-24 23:54:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959612102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485922283] [2023-11-24 23:54:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:33,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:33,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:54:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:33,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:54:33,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:33,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:33,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485922283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76401479] [2023-11-24 23:54:33,791 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:54:33,791 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:33,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:33,792 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:33,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:34,462 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:34,465 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [76401479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:34,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 6, 7] total 27 [2023-11-24 23:54:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189515774] [2023-11-24 23:54:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:54:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:54:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:54:34,964 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 23:54:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:35,302 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2023-11-24 23:54:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:54:35,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 21 [2023-11-24 23:54:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:35,304 INFO L225 Difference]: With dead ends: 46 [2023-11-24 23:54:35,304 INFO L226 Difference]: Without dead ends: 45 [2023-11-24 23:54:35,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2023-11-24 23:54:35,306 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:35,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 43 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-24 23:54:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2023-11-24 23:54:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-24 23:54:35,314 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2023-11-24 23:54:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:35,315 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-24 23:54:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 23:54:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-24 23:54:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:54:35,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:35,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:35,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:54:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:54:35,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:35,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1544825874, now seen corresponding path program 1 times [2023-11-24 23:54:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829696657] [2023-11-24 23:54:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:35,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:54:35,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241104866] [2023-11-24 23:54:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:35,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:35,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:54:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:35,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:54:35,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:35,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:35,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829696657] [2023-11-24 23:54:35,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:54:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241104866] [2023-11-24 23:54:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241104866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502277147] [2023-11-24 23:54:35,824 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-24 23:54:35,824 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:35,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:35,825 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:35,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:36,390 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2023-11-24 23:54:36,404 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:36,406 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [502277147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:37,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 7] total 28 [2023-11-24 23:54:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606302373] [2023-11-24 23:54:37,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:54:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:54:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2023-11-24 23:54:37,471 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:37,847 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2023-11-24 23:54:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 23:54:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-11-24 23:54:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:37,849 INFO L225 Difference]: With dead ends: 59 [2023-11-24 23:54:37,849 INFO L226 Difference]: Without dead ends: 42 [2023-11-24 23:54:37,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:54:37,851 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:37,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:54:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-24 23:54:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-24 23:54:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-24 23:54:37,860 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 24 [2023-11-24 23:54:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-24 23:54:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-24 23:54:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:54:37,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:37,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:37,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:54:38,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:38,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1811289400, now seen corresponding path program 1 times [2023-11-24 23:54:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307241467] [2023-11-24 23:54:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:38,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:38,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307241467] [2023-11-24 23:54:38,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307241467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:38,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910801943] [2023-11-24 23:54:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:38,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:38,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:38,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:54:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:38,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:54:38,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:38,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910801943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:38,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590002552] [2023-11-24 23:54:38,429 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:54:38,430 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:38,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:38,430 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:38,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:38,878 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:38,880 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:39,315 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1732#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post4#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:54:39,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:39,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 17 [2023-11-24 23:54:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815220960] [2023-11-24 23:54:39,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:39,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:54:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:54:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2023-11-24 23:54:39,318 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:39,571 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2023-11-24 23:54:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-24 23:54:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2023-11-24 23:54:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:39,573 INFO L225 Difference]: With dead ends: 75 [2023-11-24 23:54:39,573 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 23:54:39,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 23:54:39,575 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 53 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:39,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 76 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 23:54:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2023-11-24 23:54:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.173913043478261) internal successors, (54), 47 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-11-24 23:54:39,584 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 25 [2023-11-24 23:54:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:39,584 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-11-24 23:54:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-11-24 23:54:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:54:39,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:39,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:39,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:39,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:39,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:39,793 INFO L85 PathProgramCache]: Analyzing trace with hash 135058845, now seen corresponding path program 1 times [2023-11-24 23:54:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268589081] [2023-11-24 23:54:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:39,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:54:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415335588] [2023-11-24 23:54:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:39,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:39,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:39,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:54:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:39,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:54:39,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:39,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:40,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268589081] [2023-11-24 23:54:40,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:54:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415335588] [2023-11-24 23:54:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415335588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765498348] [2023-11-24 23:54:40,126 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-24 23:54:40,127 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:40,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:40,127 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:40,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:40,859 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2023-11-24 23:54:40,870 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:40,872 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1765498348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [8, 9] total 33 [2023-11-24 23:54:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060937677] [2023-11-24 23:54:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:41,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-24 23:54:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-24 23:54:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-24 23:54:41,643 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:42,134 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2023-11-24 23:54:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 23:54:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-11-24 23:54:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:42,135 INFO L225 Difference]: With dead ends: 62 [2023-11-24 23:54:42,135 INFO L226 Difference]: Without dead ends: 50 [2023-11-24 23:54:42,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2023-11-24 23:54:42,137 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:42,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 35 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:54:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-24 23:54:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-24 23:54:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-11-24 23:54:42,145 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 29 [2023-11-24 23:54:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:42,145 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-24 23:54:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-11-24 23:54:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:54:42,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:42,147 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:42,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:54:42,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:42,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1767116504, now seen corresponding path program 2 times [2023-11-24 23:54:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093223896] [2023-11-24 23:54:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:42,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093223896] [2023-11-24 23:54:42,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093223896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906455821] [2023-11-24 23:54:42,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:54:42,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:42,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:42,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:54:42,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:54:42,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:54:42,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:42,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-24 23:54:42,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906455821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:42,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:54:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2023-11-24 23:54:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869924704] [2023-11-24 23:54:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:42,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:54:42,880 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:42,960 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-11-24 23:54:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:54:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2023-11-24 23:54:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:42,963 INFO L225 Difference]: With dead ends: 50 [2023-11-24 23:54:42,963 INFO L226 Difference]: Without dead ends: 49 [2023-11-24 23:54:42,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-11-24 23:54:42,964 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:42,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-24 23:54:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-24 23:54:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:54:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2023-11-24 23:54:42,973 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 41 [2023-11-24 23:54:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:42,975 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2023-11-24 23:54:42,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2023-11-24 23:54:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 23:54:42,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:42,980 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:42,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:43,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:43,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:43,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1886034056, now seen corresponding path program 2 times [2023-11-24 23:54:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021510610] [2023-11-24 23:54:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:43,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:43,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021510610] [2023-11-24 23:54:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021510610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477931035] [2023-11-24 23:54:43,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:54:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:43,482 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:43,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:54:43,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:54:43,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:54:43,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:54:43,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-24 23:54:43,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-24 23:54:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477931035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1707451581] [2023-11-24 23:54:43,788 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:54:43,788 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:43,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:43,789 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:43,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:44,181 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:44,183 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:44,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2843#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post4#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:54:44,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:44,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 27 [2023-11-24 23:54:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143079451] [2023-11-24 23:54:44,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-24 23:54:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-24 23:54:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 23:54:44,928 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:54:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:45,473 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2023-11-24 23:54:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 23:54:45,474 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2023-11-24 23:54:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:45,475 INFO L225 Difference]: With dead ends: 74 [2023-11-24 23:54:45,475 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 23:54:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=668, Invalid=2524, Unknown=0, NotChecked=0, Total=3192 [2023-11-24 23:54:45,478 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:45,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 60 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:54:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 23:54:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-24 23:54:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-11-24 23:54:45,486 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2023-11-24 23:54:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:45,486 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-11-24 23:54:45,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:54:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-11-24 23:54:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:54:45,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:45,488 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:45,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:54:45,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:45,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2001890103, now seen corresponding path program 1 times [2023-11-24 23:54:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631656189] [2023-11-24 23:54:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:45,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:54:45,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642219899] [2023-11-24 23:54:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:45,712 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:45,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:54:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:45,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 23:54:45,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:54:46,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:54:46,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631656189] [2023-11-24 23:54:46,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:54:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642219899] [2023-11-24 23:54:46,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642219899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [411383507] [2023-11-24 23:54:46,451 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-24 23:54:46,451 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:46,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:46,452 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:46,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:46,926 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:54:46,928 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:47,724 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3493#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post4#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-24 23:54:47,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:47,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:47,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-24 23:54:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360805004] [2023-11-24 23:54:47,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-24 23:54:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-24 23:54:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2023-11-24 23:54:47,729 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:48,652 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2023-11-24 23:54:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-24 23:54:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2023-11-24 23:54:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:48,655 INFO L225 Difference]: With dead ends: 130 [2023-11-24 23:54:48,655 INFO L226 Difference]: Without dead ends: 110 [2023-11-24 23:54:48,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1478, Invalid=4528, Unknown=0, NotChecked=0, Total=6006 [2023-11-24 23:54:48,659 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 117 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:48,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 94 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:54:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-24 23:54:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-24 23:54:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:54:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-11-24 23:54:48,671 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 66 [2023-11-24 23:54:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:48,672 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-11-24 23:54:48,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 23:54:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-11-24 23:54:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-24 23:54:48,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:48,675 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:48,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:48,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:54:48,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-24 23:54:48,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1185594092, now seen corresponding path program 2 times [2023-11-24 23:54:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021622506] [2023-11-24 23:54:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:48,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:54:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432192717] [2023-11-24 23:54:48,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:54:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:48,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:48,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:54:48,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:54:48,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:54:48,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:48,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-11-24 23:54:49,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:49,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021622506] [2023-11-24 23:54:49,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:54:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432192717] [2023-11-24 23:54:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432192717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:49,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896711354] [2023-11-24 23:54:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:49,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:49,023 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:54:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:49,095 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-11-24 23:54:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 111 [2023-11-24 23:54:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:49,097 INFO L225 Difference]: With dead ends: 110 [2023-11-24 23:54:49,097 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:54:49,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:49,099 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:49,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:54:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:54:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 23:54:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:54:49,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2023-11-24 23:54:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:49,101 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:54:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:54:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:54:49,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:54:49,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-24 23:54:49,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-24 23:54:49,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-24 23:54:49,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-24 23:54:49,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:49,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:54:49,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:54:49,759 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 1 |#StackHeapBarrier|) (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-24 23:54:49,759 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-11-24 23:54:49,759 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 1 |#StackHeapBarrier|) (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2147483646) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L40-1(line 40) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L902 garLoopResultBuilder]: At program point L40-4(lines 40 49) the Hoare annotation is: true [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-11-24 23:54:49,760 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-24 23:54:49,761 INFO L895 garLoopResultBuilder]: At program point L36-5(lines 36 39) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0))) (or (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse3 (select |#memory_int| 1))) (and .cse0 (<= 1 .cse1) (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) .cse2 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|) (<= .cse1 2147483646) (= ~counter~0 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse3 0) 48) (= (select .cse3 1) 0))) (and (<= 2 ~counter~0) .cse0 (<= ~counter~0 50) .cse2) (and .cse0 .cse2 (= ~counter~0 1)))) [2023-11-24 23:54:49,761 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 40 49) the Hoare annotation is: (and (<= ~counter~0 51) (<= 1 ~counter~0)) [2023-11-24 23:54:49,761 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= ~counter~0 50) (<= 1 ~counter~0)) [2023-11-24 23:54:49,761 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2023-11-24 23:54:49,761 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-11-24 23:54:49,761 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-24 23:54:49,762 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:54:49,762 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-11-24 23:54:49,762 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:54:49,762 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-11-24 23:54:49,762 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2023-11-24 23:54:49,763 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2023-11-24 23:54:49,763 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2023-11-24 23:54:49,763 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2023-11-24 23:54:49,767 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:49,770 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:54:49,793 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-24 23:54:49,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-24 23:54:49,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-24 23:54:49,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-24 23:54:49,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-24 23:54:49,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-24 23:54:49,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-24 23:54:49,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:54:49 BoogieIcfgContainer [2023-11-24 23:54:49,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:54:49,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:54:49,800 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:54:49,800 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:54:49,800 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:28" (3/4) ... [2023-11-24 23:54:49,803 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:54:49,806 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-24 23:54:49,807 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-24 23:54:49,812 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-24 23:54:49,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-24 23:54:49,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 23:54:49,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:54:49,976 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:54:49,976 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:54:49,977 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:54:49,977 INFO L158 Benchmark]: Toolchain (without parser) took 22682.25ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 149.2MB in the beginning and 236.5MB in the end (delta: -87.3MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,978 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory was 82.4MB in the beginning and 82.3MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:54:49,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.32ms. Allocated memory is still 180.4MB. Free memory was 149.2MB in the beginning and 138.4MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.51ms. Allocated memory is still 180.4MB. Free memory was 138.4MB in the beginning and 136.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,979 INFO L158 Benchmark]: Boogie Preprocessor took 25.58ms. Allocated memory is still 180.4MB. Free memory was 136.6MB in the beginning and 135.7MB in the end (delta: 861.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,979 INFO L158 Benchmark]: RCFGBuilder took 411.71ms. Allocated memory is still 180.4MB. Free memory was 135.7MB in the beginning and 121.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,980 INFO L158 Benchmark]: TraceAbstraction took 21745.32ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 121.1MB in the beginning and 243.8MB in the end (delta: -122.8MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,980 INFO L158 Benchmark]: Witness Printer took 177.26ms. Allocated memory is still 377.5MB. Free memory was 243.8MB in the beginning and 236.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:54:49,989 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory was 82.4MB in the beginning and 82.3MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.32ms. Allocated memory is still 180.4MB. Free memory was 149.2MB in the beginning and 138.4MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.51ms. Allocated memory is still 180.4MB. Free memory was 138.4MB in the beginning and 136.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.58ms. Allocated memory is still 180.4MB. Free memory was 136.6MB in the beginning and 135.7MB in the end (delta: 861.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.71ms. Allocated memory is still 180.4MB. Free memory was 135.7MB in the beginning and 121.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21745.32ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 121.1MB in the beginning and 243.8MB in the end (delta: -122.8MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. * Witness Printer took 177.26ms. Allocated memory is still 377.5MB. Free memory was 243.8MB in the beginning and 236.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 21.7s, OverallIterations: 14, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 488 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 488 mSDsluCounter, 792 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 613 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1441 IncrementalHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 179 mSDtfsCounter, 1441 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1025 GetRequests, 635 SyntacticMatches, 32 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5997 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=13, InterpolantAutomatonStates: 213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 53 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 21 PreInvPairs, 48 NumberOfFragments, 203 HoareAnnotationTreeSize, 21 FomulaSimplifications, 755 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 758 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 637 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 835 ConstructedInterpolants, 0 QuantifiedInterpolants, 1901 SizeOfPredicates, 53 NumberOfNonLiveVariables, 838 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 1059/1610 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 58, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 93, TOOLS_POST_TIME: 1.0s, TOOLS_POST_CALL_APPLICATIONS: 30, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 22, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 144, TOOLS_QUANTIFIERELIM_TIME: 1.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 218, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 32, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 58, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 1.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 22, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 772, DAG_COMPRESSION_RETAINED_NODES: 186, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((counter <= 51) && (1 <= counter)) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((1 <= (B % 4294967296)) && (q == 0)) && (B == b)) && ((B % 4294967296) <= 2147483646)) && (counter == 0)) && (A == r)) || (((2 <= counter) && (counter <= 50)) && (q == 0))) || ((q == 0) && (counter == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-24 23:54:50,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4bf863c-ab36-4d37-bf64-3132c1f3930f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE