./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/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_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/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_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/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 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:29,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:29,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:16:29,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:29,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:29,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:29,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:29,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:29,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:29,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:29,345 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:29,347 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:29,347 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:29,349 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:29,350 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:29,350 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:29,351 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:29,351 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:29,352 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:29,352 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:29,353 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:29,353 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:29,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:29,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:29,355 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:16:29,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:29,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:16:29,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:29,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:29,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:29,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:29,358 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:16:29,359 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:29,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:16:29,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:29,359 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:29,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:29,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:29,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:29,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:29,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:29,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:29,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:29,362 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:29,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:29,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:29,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:29,363 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:29,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:29,363 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_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 [2023-11-24 23:16:29,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:29,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:29,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:29,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:29,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:29,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-11-24 23:16:32,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:33,084 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:33,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-11-24 23:16:33,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/data/fce4778ec/b8423a946d604740983943bff671c850/FLAG168c145bb [2023-11-24 23:16:33,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/data/fce4778ec/b8423a946d604740983943bff671c850 [2023-11-24 23:16:33,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:33,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:33,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:33,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:33,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:33,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2391243a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33, skipping insertion in model container [2023-11-24 23:16:33,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:33,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:33,322 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:33,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:33,355 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:33,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33 WrapperNode [2023-11-24 23:16:33,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:33,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:33,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:33,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:33,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,392 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-24 23:16:33,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:33,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:33,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:33,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:33,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:33,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:33,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:33,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:33,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (1/1) ... [2023-11-24 23:16:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:33,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:33,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:16:33,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:16:33,582 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:33,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:33,940 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:33,990 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:33,990 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:16:33,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:33 BoogieIcfgContainer [2023-11-24 23:16:33,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:33,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:33,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:34,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:34,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:33" (1/3) ... [2023-11-24 23:16:34,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b936308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:34, skipping insertion in model container [2023-11-24 23:16:34,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:33" (2/3) ... [2023-11-24 23:16:34,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b936308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:34, skipping insertion in model container [2023-11-24 23:16:34,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:33" (3/3) ... [2023-11-24 23:16:34,005 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound10.c [2023-11-24 23:16:34,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:34,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 23:16:34,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:34,077 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;@671dd7bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:34,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-24 23:16:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:16:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:16:34,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:34,091 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:34,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:34,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1089399791, now seen corresponding path program 1 times [2023-11-24 23:16:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967860610] [2023-11-24 23:16:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:34,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:34,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412944922] [2023-11-24 23:16:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:34,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:34,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:34,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:16:34,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:34,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:34,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967860610] [2023-11-24 23:16:34,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412944922] [2023-11-24 23:16:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412944922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:34,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971994644] [2023-11-24 23:16:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:34,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:16:34,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:16:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:34,572 INFO L87 Difference]: Start difference. First operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:16:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:34,770 INFO L93 Difference]: Finished difference Result 152 states and 178 transitions. [2023-11-24 23:16:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:16:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2023-11-24 23:16:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:34,781 INFO L225 Difference]: With dead ends: 152 [2023-11-24 23:16:34,795 INFO L226 Difference]: Without dead ends: 74 [2023-11-24 23:16:34,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:34,802 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 175 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:34,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 77 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-24 23:16:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-24 23:16:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.641025641025641) internal successors, (64), 62 states have internal predecessors, (64), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:16:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-11-24 23:16:34,864 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2023-11-24 23:16:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:34,865 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-11-24 23:16:34,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:16:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-11-24 23:16:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:16:34,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:34,868 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:34,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:35,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:16:35,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash 588344897, now seen corresponding path program 1 times [2023-11-24 23:16:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121359473] [2023-11-24 23:16:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:35,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:35,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266938099] [2023-11-24 23:16:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:35,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:35,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:35,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:35,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:16:35,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:35,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:35,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121359473] [2023-11-24 23:16:35,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266938099] [2023-11-24 23:16:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266938099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:35,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:35,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848221085] [2023-11-24 23:16:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:16:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:16:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:35,301 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:16:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:35,527 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2023-11-24 23:16:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:16:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2023-11-24 23:16:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:35,530 INFO L225 Difference]: With dead ends: 97 [2023-11-24 23:16:35,530 INFO L226 Difference]: Without dead ends: 96 [2023-11-24 23:16:35,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:35,533 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:35,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-24 23:16:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2023-11-24 23:16:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:16:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-24 23:16:35,549 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 15 [2023-11-24 23:16:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-24 23:16:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:16:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-24 23:16:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:16:35,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:35,551 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:35,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:35,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1150165444, now seen corresponding path program 1 times [2023-11-24 23:16:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608144358] [2023-11-24 23:16:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:35,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784993785] [2023-11-24 23:16:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:35,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:35,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:16:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:35,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:16:35,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:35,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:35,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:35,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608144358] [2023-11-24 23:16:35,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:35,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784993785] [2023-11-24 23:16:35,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784993785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:35,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:35,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305669757] [2023-11-24 23:16:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:16:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:16:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:35,942 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:16:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:36,163 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2023-11-24 23:16:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:16:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2023-11-24 23:16:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:36,169 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:16:36,169 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:16:36,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:36,188 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 219 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:36,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 97 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:16:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2023-11-24 23:16:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 1.606060606060606) internal successors, (106), 89 states have internal predecessors, (106), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:16:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2023-11-24 23:16:36,220 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 19 [2023-11-24 23:16:36,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:36,220 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2023-11-24 23:16:36,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:16:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2023-11-24 23:16:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:16:36,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:36,222 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:36,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:36,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:36,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:36,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1295390451, now seen corresponding path program 1 times [2023-11-24 23:16:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402038816] [2023-11-24 23:16:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:36,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:36,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776051285] [2023-11-24 23:16:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:36,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:36,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:36,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:36,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:16:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:36,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:16:36,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:36,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:36,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402038816] [2023-11-24 23:16:36,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776051285] [2023-11-24 23:16:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776051285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638479056] [2023-11-24 23:16:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:36,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:16:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:16:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:36,605 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:16:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:36,781 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2023-11-24 23:16:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:16:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2023-11-24 23:16:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:36,783 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:16:36,784 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:16:36,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:16:36,785 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 161 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:36,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 106 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:16:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2023-11-24 23:16:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 90 states have internal predecessors, (105), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:16:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2023-11-24 23:16:36,800 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 20 [2023-11-24 23:16:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:36,801 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2023-11-24 23:16:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:16:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2023-11-24 23:16:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:16:36,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:36,802 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:36,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:37,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:37,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:37,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1502398374, now seen corresponding path program 1 times [2023-11-24 23:16:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119995979] [2023-11-24 23:16:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:37,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614499447] [2023-11-24 23:16:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:37,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:37,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:16:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:37,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:16:37,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:37,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:16:37,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119995979] [2023-11-24 23:16:37,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614499447] [2023-11-24 23:16:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614499447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1036629195] [2023-11-24 23:16:37,342 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:16:37,343 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:37,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:37,352 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:37,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:16:38,058 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-24 23:16:38,065 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:16:38,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:16:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1036629195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:16:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 17 [2023-11-24 23:16:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166227351] [2023-11-24 23:16:38,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:16:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:16:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:16:38,714 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 23:16:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:39,198 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2023-11-24 23:16:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:16:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 21 [2023-11-24 23:16:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:39,201 INFO L225 Difference]: With dead ends: 116 [2023-11-24 23:16:39,201 INFO L226 Difference]: Without dead ends: 108 [2023-11-24 23:16:39,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:16:39,203 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:39,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 107 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:16:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-24 23:16:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-24 23:16:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 89 states have internal predecessors, (101), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:16:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2023-11-24 23:16:39,238 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 21 [2023-11-24 23:16:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:39,239 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2023-11-24 23:16:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 23:16:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2023-11-24 23:16:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:16:39,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:39,240 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:39,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:39,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash -36539540, now seen corresponding path program 1 times [2023-11-24 23:16:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124329287] [2023-11-24 23:16:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:39,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162908387] [2023-11-24 23:16:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:39,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:16:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:39,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:16:39,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:16:39,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:16:39,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124329287] [2023-11-24 23:16:39,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162908387] [2023-11-24 23:16:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162908387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486362812] [2023-11-24 23:16:39,690 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-24 23:16:39,690 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:39,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:39,691 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:39,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:16:40,247 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-24 23:16:40,254 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:16:40,256 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:16:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [486362812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:41,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:16:41,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5] total 19 [2023-11-24 23:16:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213121771] [2023-11-24 23:16:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:16:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:41,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:16:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:16:41,043 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-24 23:16:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:41,640 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2023-11-24 23:16:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:16:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2023-11-24 23:16:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:41,643 INFO L225 Difference]: With dead ends: 141 [2023-11-24 23:16:41,643 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 23:16:41,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:16:41,644 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 92 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:41,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 77 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:16:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 23:16:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-24 23:16:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 85 states have (on average 1.423529411764706) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:16:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-11-24 23:16:41,672 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 29 [2023-11-24 23:16:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-11-24 23:16:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-24 23:16:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-11-24 23:16:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:16:41,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:41,677 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:41,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:41,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:41,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:41,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1788982354, now seen corresponding path program 1 times [2023-11-24 23:16:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757148735] [2023-11-24 23:16:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:41,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213068496] [2023-11-24 23:16:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:41,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:41,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:16:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:41,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:41,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:16:42,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:42,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757148735] [2023-11-24 23:16:42,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213068496] [2023-11-24 23:16:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213068496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:42,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:42,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:42,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684485186] [2023-11-24 23:16:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:42,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:42,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:42,050 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:16:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:42,135 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-11-24 23:16:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 48 [2023-11-24 23:16:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:42,137 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:16:42,137 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:16:42,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:42,139 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:42,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 79 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:16:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:16:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.411764705882353) internal successors, (120), 107 states have internal predecessors, (120), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:16:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2023-11-24 23:16:42,160 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 48 [2023-11-24 23:16:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:42,160 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2023-11-24 23:16:42,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:16:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2023-11-24 23:16:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 23:16:42,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:42,162 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:42,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:42,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:16:42,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:42,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:42,368 INFO L85 PathProgramCache]: Analyzing trace with hash -376121748, now seen corresponding path program 1 times [2023-11-24 23:16:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654271636] [2023-11-24 23:16:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:42,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:42,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793358421] [2023-11-24 23:16:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:42,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:42,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:42,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:16:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:42,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:42,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:16:42,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:42,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654271636] [2023-11-24 23:16:42,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793358421] [2023-11-24 23:16:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793358421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:42,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:42,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636489309] [2023-11-24 23:16:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:42,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:42,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:42,568 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:16:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:42,678 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-11-24 23:16:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2023-11-24 23:16:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:42,681 INFO L225 Difference]: With dead ends: 150 [2023-11-24 23:16:42,681 INFO L226 Difference]: Without dead ends: 149 [2023-11-24 23:16:42,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:42,683 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:42,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 125 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-24 23:16:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-11-24 23:16:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 109 states have internal predecessors, (122), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:16:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2023-11-24 23:16:42,707 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 49 [2023-11-24 23:16:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:42,708 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2023-11-24 23:16:42,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:16:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2023-11-24 23:16:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:16:42,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:42,715 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:42,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:42,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:42,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash 526726340, now seen corresponding path program 1 times [2023-11-24 23:16:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106975086] [2023-11-24 23:16:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:42,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:42,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164281661] [2023-11-24 23:16:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:42,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:42,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:42,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:16:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:43,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:43,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:16:43,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:43,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106975086] [2023-11-24 23:16:43,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164281661] [2023-11-24 23:16:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164281661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:43,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123343839] [2023-11-24 23:16:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:43,078 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:16:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:43,156 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2023-11-24 23:16:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:43,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-24 23:16:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:43,160 INFO L225 Difference]: With dead ends: 133 [2023-11-24 23:16:43,160 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 23:16:43,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:43,163 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:43,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 23:16:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-24 23:16:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:16:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-11-24 23:16:43,186 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 52 [2023-11-24 23:16:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:43,187 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-11-24 23:16:43,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:16:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-11-24 23:16:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 23:16:43,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:43,189 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:43,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:43,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:43,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1396457673, now seen corresponding path program 1 times [2023-11-24 23:16:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:43,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251070826] [2023-11-24 23:16:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:43,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651371788] [2023-11-24 23:16:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:43,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:43,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:16:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:43,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:43,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:16:43,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:43,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251070826] [2023-11-24 23:16:43,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651371788] [2023-11-24 23:16:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651371788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:43,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:43,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159564415] [2023-11-24 23:16:43,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:43,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:43,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:43,507 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:16:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:43,552 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-11-24 23:16:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-11-24 23:16:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:43,555 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:16:43,555 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:16:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:43,556 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:43,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 93 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:16:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:16:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:16:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 87 states have (on average 1.367816091954023) internal successors, (119), 107 states have internal predecessors, (119), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:16:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2023-11-24 23:16:43,579 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 55 [2023-11-24 23:16:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:43,580 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2023-11-24 23:16:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:16:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2023-11-24 23:16:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:16:43,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:43,581 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:43,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:16:43,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:43,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -859509049, now seen corresponding path program 1 times [2023-11-24 23:16:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785131299] [2023-11-24 23:16:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:43,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400177246] [2023-11-24 23:16:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:43,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:43,802 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:43,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:16:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:43,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:16:43,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-24 23:16:44,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:44,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785131299] [2023-11-24 23:16:44,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400177246] [2023-11-24 23:16:44,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400177246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863543612] [2023-11-24 23:16:44,427 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-24 23:16:44,427 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:44,428 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:44,429 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:44,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:16:51,518 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-24 23:16:51,520 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:16:51,521 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:16:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1863543612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 22 [2023-11-24 23:16:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454843289] [2023-11-24 23:16:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:16:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:16:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:16:55,012 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-24 23:16:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:55,914 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2023-11-24 23:16:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:16:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2023-11-24 23:16:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:55,918 INFO L225 Difference]: With dead ends: 189 [2023-11-24 23:16:55,918 INFO L226 Difference]: Without dead ends: 165 [2023-11-24 23:16:55,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:16:55,920 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:55,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 55 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:16:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-24 23:16:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-11-24 23:16:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 131 states have internal predecessors, (144), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:16:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2023-11-24 23:16:55,952 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 56 [2023-11-24 23:16:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:55,953 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2023-11-24 23:16:55,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-24 23:16:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2023-11-24 23:16:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:16:55,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:55,955 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:55,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:56,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:56,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:56,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -340514788, now seen corresponding path program 1 times [2023-11-24 23:16:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:56,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601447911] [2023-11-24 23:16:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:56,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:56,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:56,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532628237] [2023-11-24 23:16:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:56,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:56,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:56,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:16:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:56,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:56,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:16:56,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:56,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601447911] [2023-11-24 23:16:56,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532628237] [2023-11-24 23:16:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532628237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:56,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:56,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860501761] [2023-11-24 23:16:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:56,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:56,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:56,338 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:16:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:56,383 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2023-11-24 23:16:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-24 23:16:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:56,385 INFO L225 Difference]: With dead ends: 161 [2023-11-24 23:16:56,385 INFO L226 Difference]: Without dead ends: 160 [2023-11-24 23:16:56,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:56,386 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 29 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:56,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:16:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-24 23:16:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-24 23:16:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 130 states have internal predecessors, (142), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:16:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2023-11-24 23:16:56,409 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 56 [2023-11-24 23:16:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:56,409 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2023-11-24 23:16:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:16:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2023-11-24 23:16:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:16:56,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:56,411 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:56,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:56,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:56,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:16:56,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 436777392, now seen corresponding path program 1 times [2023-11-24 23:16:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:56,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777381467] [2023-11-24 23:16:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:56,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:56,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751330279] [2023-11-24 23:16:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:56,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:56,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:56,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:16:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:56,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 23:16:56,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:16:57,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:57,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777381467] [2023-11-24 23:16:57,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751330279] [2023-11-24 23:16:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751330279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775549062] [2023-11-24 23:16:57,960 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:16:57,961 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:57,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:57,961 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:57,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:17:02,217 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-24 23:17:02,219 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:17:02,220 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:06,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5603#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (div |ULTIMATE.start_main_~a~0#1| 2) 4611686018427387903) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 (+ 4611686018427387904 (div |ULTIMATE.start_main_~b~0#1| 2))) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 10) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-11-24 23:17:06,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:17:06,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-24 23:17:06,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888009404] [2023-11-24 23:17:06,801 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:17:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:17:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:17:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 23:17:06,805 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:17:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:10,058 INFO L93 Difference]: Finished difference Result 364 states and 438 transitions. [2023-11-24 23:17:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:17:10,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 59 [2023-11-24 23:17:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:10,061 INFO L225 Difference]: With dead ends: 364 [2023-11-24 23:17:10,062 INFO L226 Difference]: Without dead ends: 361 [2023-11-24 23:17:10,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 23:17:10,064 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 472 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:10,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 288 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-24 23:17:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-24 23:17:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 231. [2023-11-24 23:17:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 188 states have internal predecessors, (227), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:17:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 303 transitions. [2023-11-24 23:17:10,107 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 303 transitions. Word has length 59 [2023-11-24 23:17:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 303 transitions. [2023-11-24 23:17:10,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:17:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 303 transitions. [2023-11-24 23:17:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:17:10,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:10,110 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:10,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:10,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:10,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:17:10,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash 862919785, now seen corresponding path program 1 times [2023-11-24 23:17:10,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:10,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217075687] [2023-11-24 23:17:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:10,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:10,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164107969] [2023-11-24 23:17:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:10,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:10,329 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:10,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:17:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:10,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:10,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-24 23:17:10,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:10,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:10,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217075687] [2023-11-24 23:17:10,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:10,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164107969] [2023-11-24 23:17:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164107969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:10,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379260951] [2023-11-24 23:17:10,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:10,473 INFO L87 Difference]: Start difference. First operand 231 states and 303 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:17:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:10,587 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2023-11-24 23:17:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:10,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2023-11-24 23:17:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:10,590 INFO L225 Difference]: With dead ends: 231 [2023-11-24 23:17:10,590 INFO L226 Difference]: Without dead ends: 229 [2023-11-24 23:17:10,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:10,591 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:10,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-24 23:17:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-24 23:17:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 169 states have (on average 1.3076923076923077) internal successors, (221), 186 states have internal predecessors, (221), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:17:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 297 transitions. [2023-11-24 23:17:10,650 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 297 transitions. Word has length 65 [2023-11-24 23:17:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:10,651 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 297 transitions. [2023-11-24 23:17:10,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:17:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 297 transitions. [2023-11-24 23:17:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:17:10,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:10,652 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:10,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:10,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:17:10,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:17:10,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash 980709646, now seen corresponding path program 1 times [2023-11-24 23:17:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706927951] [2023-11-24 23:17:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:10,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658241853] [2023-11-24 23:17:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:10,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:10,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:10,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:17:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:10,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:10,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-24 23:17:11,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:11,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:11,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706927951] [2023-11-24 23:17:11,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:11,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658241853] [2023-11-24 23:17:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658241853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:17:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277380843] [2023-11-24 23:17:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:11,012 INFO L87 Difference]: Start difference. First operand 229 states and 297 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:17:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:11,105 INFO L93 Difference]: Finished difference Result 229 states and 297 transitions. [2023-11-24 23:17:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:11,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-24 23:17:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:11,108 INFO L225 Difference]: With dead ends: 229 [2023-11-24 23:17:11,108 INFO L226 Difference]: Without dead ends: 225 [2023-11-24 23:17:11,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:11,109 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:11,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:17:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-24 23:17:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-11-24 23:17:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.2754491017964071) internal successors, (213), 182 states have internal predecessors, (213), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:17:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 289 transitions. [2023-11-24 23:17:11,153 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 289 transitions. Word has length 66 [2023-11-24 23:17:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:11,153 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 289 transitions. [2023-11-24 23:17:11,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:17:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 289 transitions. [2023-11-24 23:17:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:17:11,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:11,155 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:11,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 23:17:11,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:17:11,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1793604937, now seen corresponding path program 1 times [2023-11-24 23:17:11,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:11,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965778427] [2023-11-24 23:17:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:11,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343332987] [2023-11-24 23:17:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:11,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:11,385 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:11,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:17:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:11,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:17:11,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:17:11,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:17:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:17:11,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965778427] [2023-11-24 23:17:11,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343332987] [2023-11-24 23:17:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343332987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:17:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1914343349] [2023-11-24 23:17:11,669 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:17:11,669 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:17:11,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:17:11,671 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:17:11,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:17:15,456 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-24 23:17:15,457 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:17:15,458 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:18,441 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8315#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 10))' at error location [2023-11-24 23:17:18,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:17:18,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:17:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-24 23:17:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076514414] [2023-11-24 23:17:18,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:17:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:17:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:17:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2023-11-24 23:17:18,445 INFO L87 Difference]: Start difference. First operand 225 states and 289 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-24 23:17:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:19,026 INFO L93 Difference]: Finished difference Result 447 states and 564 transitions. [2023-11-24 23:17:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:17:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 73 [2023-11-24 23:17:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:19,030 INFO L225 Difference]: With dead ends: 447 [2023-11-24 23:17:19,030 INFO L226 Difference]: Without dead ends: 446 [2023-11-24 23:17:19,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2023-11-24 23:17:19,032 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 250 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:19,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 224 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:17:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-24 23:17:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 337. [2023-11-24 23:17:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 272 states have internal predecessors, (332), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-24 23:17:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 452 transitions. [2023-11-24 23:17:19,104 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 452 transitions. Word has length 73 [2023-11-24 23:17:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 452 transitions. [2023-11-24 23:17:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-24 23:17:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 452 transitions. [2023-11-24 23:17:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:17:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:19,107 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:19,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:17:19,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:17:19,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash -232821708, now seen corresponding path program 1 times [2023-11-24 23:17:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769309147] [2023-11-24 23:17:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:19,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:19,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284295901] [2023-11-24 23:17:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:19,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:19,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:19,327 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:19,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc7b557-bd89-44d7-8857-c0a6bdcffca7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-24 23:17:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:19,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:17:19,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:17:19,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:17:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:17:19,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:19,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769309147] [2023-11-24 23:17:19,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284295901] [2023-11-24 23:17:19,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284295901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:17:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995697287] [2023-11-24 23:17:19,600 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:17:19,600 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:17:19,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:17:19,601 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:17:19,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs