./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ --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 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:37,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:37,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:02:37,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:37,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:38,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:38,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:38,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:38,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:38,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:38,010 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:38,010 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:38,011 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:38,012 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:38,013 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:38,013 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:38,014 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:38,014 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:38,014 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:38,015 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:38,015 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:38,016 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:38,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:38,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:38,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:38,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:38,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:38,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:38,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:38,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:38,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:38,021 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:02:38,021 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:38,022 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:38,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:38,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:38,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:38,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:38,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:38,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:38,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:38,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:38,024 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:38,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:38,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:38,025 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:38,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:38,026 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_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2023-11-19 05:02:38,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:38,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:38,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:38,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:38,328 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:38,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-11-19 05:02:41,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:41,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:41,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-11-19 05:02:41,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/data/d32a855d0/88a54186af7a4dc3ac21154ecc373114/FLAGa2f3aed6e [2023-11-19 05:02:41,817 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/data/d32a855d0/88a54186af7a4dc3ac21154ecc373114 [2023-11-19 05:02:41,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:41,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:41,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:41,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:41,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:41,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:41" (1/1) ... [2023-11-19 05:02:41,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1504de36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:41, skipping insertion in model container [2023-11-19 05:02:41,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:41" (1/1) ... [2023-11-19 05:02:41,859 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:42,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:42,056 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:42,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:42,097 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:42,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42 WrapperNode [2023-11-19 05:02:42,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:42,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:42,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:42,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:42,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,152 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-11-19 05:02:42,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:42,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:42,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:42,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:42,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,171 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:42,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:42,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:42,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:42,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:42,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:42,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:42,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:42,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:02:42,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:02:42,332 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:42,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:42,941 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:42,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:42,968 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:02:42,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:42 BoogieIcfgContainer [2023-11-19 05:02:42,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:43,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:43,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:43,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:43,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:41" (1/3) ... [2023-11-19 05:02:43,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb67e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:43, skipping insertion in model container [2023-11-19 05:02:43,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42" (2/3) ... [2023-11-19 05:02:43,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb67e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:43, skipping insertion in model container [2023-11-19 05:02:43,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:42" (3/3) ... [2023-11-19 05:02:43,011 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-11-19 05:02:43,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:43,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-19 05:02:43,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:43,096 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;@310c8a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:43,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-19 05:02:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:02:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 05:02:43,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:43,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 05:02:43,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:43,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash 6296, now seen corresponding path program 1 times [2023-11-19 05:02:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890800129] [2023-11-19 05:02:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:43,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890800129] [2023-11-19 05:02:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890800129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:43,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:43,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:02:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024536224] [2023-11-19 05:02:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,331 INFO L87 Difference]: Start difference. First operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:43,475 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-11-19 05:02:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 05:02:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:43,486 INFO L225 Difference]: With dead ends: 180 [2023-11-19 05:02:43,487 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 05:02:43,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,494 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:43,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 05:02:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-19 05:02:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.8656716417910448) internal successors, (125), 122 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-11-19 05:02:43,543 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 2 [2023-11-19 05:02:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:43,544 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-11-19 05:02:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-11-19 05:02:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:02:43,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:43,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:02:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:02:43,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:43,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash 195212, now seen corresponding path program 1 times [2023-11-19 05:02:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932811745] [2023-11-19 05:02:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:43,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932811745] [2023-11-19 05:02:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932811745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:02:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347654222] [2023-11-19 05:02:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,627 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:43,729 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-11-19 05:02:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:02:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:43,732 INFO L225 Difference]: With dead ends: 125 [2023-11-19 05:02:43,732 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 05:02:43,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,735 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 118 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:43,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 67 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 05:02:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-19 05:02:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 118 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-11-19 05:02:43,749 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 3 [2023-11-19 05:02:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:43,750 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-11-19 05:02:43,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-11-19 05:02:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:02:43,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:43,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:02:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:02:43,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:43,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 6051610, now seen corresponding path program 1 times [2023-11-19 05:02:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474532729] [2023-11-19 05:02:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:43,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474532729] [2023-11-19 05:02:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474532729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:02:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079768126] [2023-11-19 05:02:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,827 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:43,976 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-11-19 05:02:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:02:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:43,980 INFO L225 Difference]: With dead ends: 121 [2023-11-19 05:02:43,980 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 05:02:43,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:43,983 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:43,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 53 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 05:02:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-19 05:02:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.791044776119403) internal successors, (120), 117 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2023-11-19 05:02:43,996 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 4 [2023-11-19 05:02:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:43,996 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2023-11-19 05:02:43,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2023-11-19 05:02:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:02:43,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:43,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:02:43,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:02:43,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:43,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:43,999 INFO L85 PathProgramCache]: Analyzing trace with hash 187599950, now seen corresponding path program 1 times [2023-11-19 05:02:43,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101544025] [2023-11-19 05:02:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:44,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101544025] [2023-11-19 05:02:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101544025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:44,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:02:44,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082583407] [2023-11-19 05:02:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:44,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:44,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:44,044 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:44,153 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-11-19 05:02:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:02:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:44,158 INFO L225 Difference]: With dead ends: 120 [2023-11-19 05:02:44,158 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 05:02:44,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:44,169 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:44,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 53 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 05:02:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-19 05:02:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 116 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-11-19 05:02:44,192 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 5 [2023-11-19 05:02:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:44,192 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-11-19 05:02:44,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-11-19 05:02:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:02:44,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:44,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:02:44,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:44,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -105073040, now seen corresponding path program 1 times [2023-11-19 05:02:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550901352] [2023-11-19 05:02:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:44,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550901352] [2023-11-19 05:02:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550901352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:44,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320590065] [2023-11-19 05:02:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:44,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:44,356 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:44,405 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2023-11-19 05:02:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:44,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:02:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:44,408 INFO L225 Difference]: With dead ends: 167 [2023-11-19 05:02:44,408 INFO L226 Difference]: Without dead ends: 123 [2023-11-19 05:02:44,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:44,415 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 4 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:44,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 339 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-19 05:02:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-19 05:02:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.732394366197183) internal successors, (123), 120 states have internal predecessors, (123), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2023-11-19 05:02:44,459 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 7 [2023-11-19 05:02:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2023-11-19 05:02:44,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2023-11-19 05:02:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:02:44,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:44,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:44,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:02:44,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:44,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 800272963, now seen corresponding path program 1 times [2023-11-19 05:02:44,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:44,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616408865] [2023-11-19 05:02:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:44,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:44,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278473915] [2023-11-19 05:02:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:44,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:44,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:02:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:44,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:44,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:44,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:44,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616408865] [2023-11-19 05:02:44,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278473915] [2023-11-19 05:02:44,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278473915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:44,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335035839] [2023-11-19 05:02:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:44,597 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:44,662 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2023-11-19 05:02:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:44,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:02:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:44,665 INFO L225 Difference]: With dead ends: 229 [2023-11-19 05:02:44,666 INFO L226 Difference]: Without dead ends: 223 [2023-11-19 05:02:44,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:44,668 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 99 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:44,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 212 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-19 05:02:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 147. [2023-11-19 05:02:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 143 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:02:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2023-11-19 05:02:44,694 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 10 [2023-11-19 05:02:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:44,695 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2023-11-19 05:02:44,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2023-11-19 05:02:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:02:44,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:44,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:44,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:02:44,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:44,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash 263173317, now seen corresponding path program 1 times [2023-11-19 05:02:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447269752] [2023-11-19 05:02:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:44,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:44,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178009367] [2023-11-19 05:02:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:44,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:44,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:44,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:44,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:02:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:44,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:44,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:45,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:45,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447269752] [2023-11-19 05:02:45,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:45,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178009367] [2023-11-19 05:02:45,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178009367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:45,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:45,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:45,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023011669] [2023-11-19 05:02:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:45,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:45,014 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:45,072 INFO L93 Difference]: Finished difference Result 259 states and 280 transitions. [2023-11-19 05:02:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:45,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:02:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:45,075 INFO L225 Difference]: With dead ends: 259 [2023-11-19 05:02:45,075 INFO L226 Difference]: Without dead ends: 253 [2023-11-19 05:02:45,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:45,077 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 100 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:45,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 210 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-19 05:02:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 199. [2023-11-19 05:02:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 145 states have (on average 1.703448275862069) internal successors, (247), 194 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2023-11-19 05:02:45,095 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 12 [2023-11-19 05:02:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:45,096 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2023-11-19 05:02:45,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2023-11-19 05:02:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:02:45,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:45,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:45,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:45,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:45,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -493510841, now seen corresponding path program 1 times [2023-11-19 05:02:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:45,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601873569] [2023-11-19 05:02:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:45,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000170913] [2023-11-19 05:02:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:45,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:45,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:45,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:02:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:45,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:45,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:45,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:45,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601873569] [2023-11-19 05:02:45,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000170913] [2023-11-19 05:02:45,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000170913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:45,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:45,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596513219] [2023-11-19 05:02:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:45,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:45,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:45,404 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:45,582 INFO L93 Difference]: Finished difference Result 302 states and 354 transitions. [2023-11-19 05:02:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:45,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:02:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:45,588 INFO L225 Difference]: With dead ends: 302 [2023-11-19 05:02:45,589 INFO L226 Difference]: Without dead ends: 300 [2023-11-19 05:02:45,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:45,592 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 198 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:45,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 250 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-19 05:02:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 200. [2023-11-19 05:02:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 146 states have (on average 1.6917808219178083) internal successors, (247), 195 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 253 transitions. [2023-11-19 05:02:45,614 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 253 transitions. Word has length 14 [2023-11-19 05:02:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:45,615 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 253 transitions. [2023-11-19 05:02:45,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 253 transitions. [2023-11-19 05:02:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:02:45,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:45,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:45,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:45,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1881033179, now seen corresponding path program 1 times [2023-11-19 05:02:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712911531] [2023-11-19 05:02:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:45,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637917762] [2023-11-19 05:02:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:45,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:45,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:02:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:45,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:45,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:45,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:45,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712911531] [2023-11-19 05:02:45,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637917762] [2023-11-19 05:02:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637917762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585530345] [2023-11-19 05:02:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:45,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:45,961 INFO L87 Difference]: Start difference. First operand 200 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:46,121 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-11-19 05:02:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:02:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:46,124 INFO L225 Difference]: With dead ends: 300 [2023-11-19 05:02:46,124 INFO L226 Difference]: Without dead ends: 298 [2023-11-19 05:02:46,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:46,126 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 193 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:46,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 252 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-19 05:02:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 201. [2023-11-19 05:02:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6802721088435375) internal successors, (247), 196 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 253 transitions. [2023-11-19 05:02:46,138 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 253 transitions. Word has length 15 [2023-11-19 05:02:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:46,138 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 253 transitions. [2023-11-19 05:02:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 253 transitions. [2023-11-19 05:02:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:02:46,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:46,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:46,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:02:46,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:46,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1817513527, now seen corresponding path program 1 times [2023-11-19 05:02:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221552300] [2023-11-19 05:02:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:46,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101565621] [2023-11-19 05:02:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:46,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:46,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:02:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:46,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:46,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:46,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:46,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221552300] [2023-11-19 05:02:46,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101565621] [2023-11-19 05:02:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101565621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:46,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:46,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371063603] [2023-11-19 05:02:46,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:46,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:46,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:46,474 INFO L87 Difference]: Start difference. First operand 201 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:46,628 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2023-11-19 05:02:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 05:02:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:46,631 INFO L225 Difference]: With dead ends: 278 [2023-11-19 05:02:46,631 INFO L226 Difference]: Without dead ends: 276 [2023-11-19 05:02:46,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:46,633 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 220 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:46,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 251 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-19 05:02:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 201. [2023-11-19 05:02:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6598639455782314) internal successors, (244), 196 states have internal predecessors, (244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2023-11-19 05:02:46,646 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 16 [2023-11-19 05:02:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:46,646 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2023-11-19 05:02:46,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2023-11-19 05:02:46,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:02:46,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:46,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:46,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:46,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash -508344419, now seen corresponding path program 1 times [2023-11-19 05:02:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983526434] [2023-11-19 05:02:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:46,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840525827] [2023-11-19 05:02:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:46,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:46,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:46,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:02:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:46,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:46,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:46,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:46,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983526434] [2023-11-19 05:02:46,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840525827] [2023-11-19 05:02:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840525827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:46,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:46,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120660980] [2023-11-19 05:02:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:46,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:46,967 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:47,113 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2023-11-19 05:02:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:02:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:47,116 INFO L225 Difference]: With dead ends: 276 [2023-11-19 05:02:47,116 INFO L226 Difference]: Without dead ends: 274 [2023-11-19 05:02:47,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:47,117 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 215 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 253 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-19 05:02:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 201. [2023-11-19 05:02:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6394557823129252) internal successors, (241), 196 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 247 transitions. [2023-11-19 05:02:47,130 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 247 transitions. Word has length 17 [2023-11-19 05:02:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:47,131 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 247 transitions. [2023-11-19 05:02:47,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 247 transitions. [2023-11-19 05:02:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:02:47,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:47,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:47,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 05:02:47,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:47,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:47,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1421192267, now seen corresponding path program 1 times [2023-11-19 05:02:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:47,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989636564] [2023-11-19 05:02:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:47,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:47,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:47,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747913675] [2023-11-19 05:02:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:47,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:47,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:47,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:47,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:02:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:02:47,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:47,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:47,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989636564] [2023-11-19 05:02:47,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747913675] [2023-11-19 05:02:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747913675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294481579] [2023-11-19 05:02:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:47,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:47,543 INFO L87 Difference]: Start difference. First operand 201 states and 247 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:47,789 INFO L93 Difference]: Finished difference Result 298 states and 338 transitions. [2023-11-19 05:02:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:02:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 05:02:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:47,792 INFO L225 Difference]: With dead ends: 298 [2023-11-19 05:02:47,792 INFO L226 Difference]: Without dead ends: 296 [2023-11-19 05:02:47,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:02:47,794 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 287 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:47,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 284 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-19 05:02:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 204. [2023-11-19 05:02:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.62) internal successors, (243), 199 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 249 transitions. [2023-11-19 05:02:47,808 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 249 transitions. Word has length 18 [2023-11-19 05:02:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:47,808 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 249 transitions. [2023-11-19 05:02:47,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 249 transitions. [2023-11-19 05:02:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:02:47,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:47,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:47,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:48,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:48,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:48,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1107287391, now seen corresponding path program 1 times [2023-11-19 05:02:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:48,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925789177] [2023-11-19 05:02:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:48,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242290106] [2023-11-19 05:02:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:48,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:48,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:48,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:48,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:02:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:48,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:02:48,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:48,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:48,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925789177] [2023-11-19 05:02:48,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242290106] [2023-11-19 05:02:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242290106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:48,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:48,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308797156] [2023-11-19 05:02:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:48,202 INFO L87 Difference]: Start difference. First operand 204 states and 249 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:48,448 INFO L93 Difference]: Finished difference Result 296 states and 336 transitions. [2023-11-19 05:02:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:02:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:02:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:48,452 INFO L225 Difference]: With dead ends: 296 [2023-11-19 05:02:48,452 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 05:02:48,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:02:48,455 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 280 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:48,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 286 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 05:02:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2023-11-19 05:02:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 151 states have (on average 1.609271523178808) internal successors, (243), 200 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 249 transitions. [2023-11-19 05:02:48,467 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 249 transitions. Word has length 19 [2023-11-19 05:02:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:48,467 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 249 transitions. [2023-11-19 05:02:48,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 249 transitions. [2023-11-19 05:02:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:02:48,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:48,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:48,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:02:48,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:48,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash -33829171, now seen corresponding path program 1 times [2023-11-19 05:02:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286832066] [2023-11-19 05:02:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:48,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703103665] [2023-11-19 05:02:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:48,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:48,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:02:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:48,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:02:48,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:48,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:48,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:48,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286832066] [2023-11-19 05:02:48,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703103665] [2023-11-19 05:02:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703103665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:48,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:48,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582434697] [2023-11-19 05:02:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:02:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:02:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:02:48,909 INFO L87 Difference]: Start difference. First operand 205 states and 249 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:49,212 INFO L93 Difference]: Finished difference Result 294 states and 334 transitions. [2023-11-19 05:02:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:02:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 05:02:49,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:49,215 INFO L225 Difference]: With dead ends: 294 [2023-11-19 05:02:49,215 INFO L226 Difference]: Without dead ends: 292 [2023-11-19 05:02:49,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:49,216 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 495 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:49,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 198 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-19 05:02:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 206. [2023-11-19 05:02:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 152 states have (on average 1.5986842105263157) internal successors, (243), 201 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 249 transitions. [2023-11-19 05:02:49,232 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 249 transitions. Word has length 20 [2023-11-19 05:02:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:49,232 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 249 transitions. [2023-11-19 05:02:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 249 transitions. [2023-11-19 05:02:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:02:49,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:49,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:49,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:49,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 05:02:49,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:49,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1048704223, now seen corresponding path program 1 times [2023-11-19 05:02:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031277672] [2023-11-19 05:02:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:49,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:49,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879005277] [2023-11-19 05:02:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:49,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:49,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:49,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:02:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:49,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:02:49,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:49,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:49,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031277672] [2023-11-19 05:02:49,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879005277] [2023-11-19 05:02:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879005277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:49,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895624984] [2023-11-19 05:02:49,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:02:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:02:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:02:49,648 INFO L87 Difference]: Start difference. First operand 206 states and 249 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:49,978 INFO L93 Difference]: Finished difference Result 292 states and 332 transitions. [2023-11-19 05:02:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:02:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 05:02:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:49,981 INFO L225 Difference]: With dead ends: 292 [2023-11-19 05:02:49,981 INFO L226 Difference]: Without dead ends: 290 [2023-11-19 05:02:49,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:49,982 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 383 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:49,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 201 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-19 05:02:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 207. [2023-11-19 05:02:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.588235294117647) internal successors, (243), 202 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 249 transitions. [2023-11-19 05:02:49,994 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 249 transitions. Word has length 21 [2023-11-19 05:02:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:49,994 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 249 transitions. [2023-11-19 05:02:49,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 249 transitions. [2023-11-19 05:02:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:02:49,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:49,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:50,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 05:02:50,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:50,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -355316783, now seen corresponding path program 1 times [2023-11-19 05:02:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112451501] [2023-11-19 05:02:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:50,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509063242] [2023-11-19 05:02:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:50,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:50,222 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:50,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:02:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:50,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:02:50,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:50,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:50,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112451501] [2023-11-19 05:02:50,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509063242] [2023-11-19 05:02:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509063242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586710452] [2023-11-19 05:02:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:02:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:02:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:02:50,507 INFO L87 Difference]: Start difference. First operand 207 states and 249 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:51,150 INFO L93 Difference]: Finished difference Result 288 states and 330 transitions. [2023-11-19 05:02:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:02:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:02:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:51,152 INFO L225 Difference]: With dead ends: 288 [2023-11-19 05:02:51,152 INFO L226 Difference]: Without dead ends: 284 [2023-11-19 05:02:51,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:51,153 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 401 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:51,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 134 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:02:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-19 05:02:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 208. [2023-11-19 05:02:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.5576923076923077) internal successors, (243), 203 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2023-11-19 05:02:51,166 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 24 [2023-11-19 05:02:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:51,166 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2023-11-19 05:02:51,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2023-11-19 05:02:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 05:02:51,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:51,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:51,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:51,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 05:02:51,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1870081701, now seen corresponding path program 1 times [2023-11-19 05:02:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792326438] [2023-11-19 05:02:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:51,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067779012] [2023-11-19 05:02:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:51,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:51,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:51,395 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:51,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:02:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:51,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:02:51,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:51,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:51,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:51,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792326438] [2023-11-19 05:02:51,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067779012] [2023-11-19 05:02:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067779012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:51,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114166012] [2023-11-19 05:02:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:02:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:02:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:02:51,664 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:52,113 INFO L93 Difference]: Finished difference Result 282 states and 324 transitions. [2023-11-19 05:02:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:02:52,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-19 05:02:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:52,115 INFO L225 Difference]: With dead ends: 282 [2023-11-19 05:02:52,115 INFO L226 Difference]: Without dead ends: 278 [2023-11-19 05:02:52,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:52,116 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 351 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:52,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 135 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:02:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-19 05:02:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2023-11-19 05:02:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.535031847133758) internal successors, (241), 202 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2023-11-19 05:02:52,128 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 25 [2023-11-19 05:02:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:52,128 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2023-11-19 05:02:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2023-11-19 05:02:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:02:52,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:52,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:52,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:52,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 05:02:52,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:52,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2137957971, now seen corresponding path program 1 times [2023-11-19 05:02:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867079624] [2023-11-19 05:02:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:52,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335752520] [2023-11-19 05:02:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:52,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:52,364 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:52,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:02:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:52,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:52,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:52,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:52,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:52,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867079624] [2023-11-19 05:02:52,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:52,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335752520] [2023-11-19 05:02:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335752520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:52,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652026677] [2023-11-19 05:02:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:52,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:52,492 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:52,716 INFO L93 Difference]: Finished difference Result 234 states and 272 transitions. [2023-11-19 05:02:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:52,717 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 05:02:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:52,720 INFO L225 Difference]: With dead ends: 234 [2023-11-19 05:02:52,720 INFO L226 Difference]: Without dead ends: 232 [2023-11-19 05:02:52,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:52,721 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:52,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 143 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-19 05:02:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2023-11-19 05:02:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 158 states have (on average 1.5253164556962024) internal successors, (241), 203 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2023-11-19 05:02:52,733 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 26 [2023-11-19 05:02:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:52,734 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2023-11-19 05:02:52,735 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2023-11-19 05:02:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:02:52,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:52,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:52,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 05:02:52,944 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:52,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1852187751, now seen corresponding path program 1 times [2023-11-19 05:02:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749013063] [2023-11-19 05:02:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:52,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163239444] [2023-11-19 05:02:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:52,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:52,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:52,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:52,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:02:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:53,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:53,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:53,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:53,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:53,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749013063] [2023-11-19 05:02:53,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:53,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163239444] [2023-11-19 05:02:53,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163239444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:53,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:53,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561859196] [2023-11-19 05:02:53,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:53,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:53,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:53,107 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:53,278 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2023-11-19 05:02:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:53,278 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 05:02:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:53,280 INFO L225 Difference]: With dead ends: 232 [2023-11-19 05:02:53,280 INFO L226 Difference]: Without dead ends: 230 [2023-11-19 05:02:53,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:53,281 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 71 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:53,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 126 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-19 05:02:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 209. [2023-11-19 05:02:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.5157232704402517) internal successors, (241), 204 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 247 transitions. [2023-11-19 05:02:53,292 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 247 transitions. Word has length 27 [2023-11-19 05:02:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:53,293 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 247 transitions. [2023-11-19 05:02:53,293 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 247 transitions. [2023-11-19 05:02:53,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 05:02:53,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:53,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:53,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:53,515 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:53,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1816322767, now seen corresponding path program 1 times [2023-11-19 05:02:53,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:53,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963231335] [2023-11-19 05:02:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:53,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:53,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71056608] [2023-11-19 05:02:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:53,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:53,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:53,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:53,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:02:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:53,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:53,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:53,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:53,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963231335] [2023-11-19 05:02:53,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71056608] [2023-11-19 05:02:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71056608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777729473] [2023-11-19 05:02:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:53,748 INFO L87 Difference]: Start difference. First operand 209 states and 247 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:54,037 INFO L93 Difference]: Finished difference Result 230 states and 268 transitions. [2023-11-19 05:02:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:54,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-19 05:02:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:54,039 INFO L225 Difference]: With dead ends: 230 [2023-11-19 05:02:54,039 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 05:02:54,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:54,040 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 204 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:54,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 100 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 05:02:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2023-11-19 05:02:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 168 states have (on average 1.494047619047619) internal successors, (251), 213 states have internal predecessors, (251), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 257 transitions. [2023-11-19 05:02:54,051 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 257 transitions. Word has length 35 [2023-11-19 05:02:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:54,053 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 257 transitions. [2023-11-19 05:02:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 257 transitions. [2023-11-19 05:02:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 05:02:54,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:54,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:54,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:54,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:54,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash -471430822, now seen corresponding path program 1 times [2023-11-19 05:02:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843192632] [2023-11-19 05:02:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:54,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:54,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941982890] [2023-11-19 05:02:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:54,288 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:54,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 05:02:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:54,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:54,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:54,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:54,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843192632] [2023-11-19 05:02:54,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941982890] [2023-11-19 05:02:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941982890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:54,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:54,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445096550] [2023-11-19 05:02:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:54,419 INFO L87 Difference]: Start difference. First operand 218 states and 257 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:54,581 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2023-11-19 05:02:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:54,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-19 05:02:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:54,584 INFO L225 Difference]: With dead ends: 228 [2023-11-19 05:02:54,584 INFO L226 Difference]: Without dead ends: 227 [2023-11-19 05:02:54,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:54,585 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 201 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:54,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 129 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-19 05:02:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2023-11-19 05:02:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.4911242603550297) internal successors, (252), 214 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 258 transitions. [2023-11-19 05:02:54,596 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 258 transitions. Word has length 36 [2023-11-19 05:02:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:54,597 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 258 transitions. [2023-11-19 05:02:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 258 transitions. [2023-11-19 05:02:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 05:02:54,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:54,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:54,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:54,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:54,828 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:54,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2073449796, now seen corresponding path program 1 times [2023-11-19 05:02:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304131494] [2023-11-19 05:02:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:54,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:54,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984787877] [2023-11-19 05:02:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:54,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:54,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:54,836 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:54,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 05:02:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:54,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:54,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:54,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:54,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304131494] [2023-11-19 05:02:54,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984787877] [2023-11-19 05:02:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984787877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441454222] [2023-11-19 05:02:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:54,951 INFO L87 Difference]: Start difference. First operand 219 states and 258 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:55,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:55,125 INFO L93 Difference]: Finished difference Result 219 states and 258 transitions. [2023-11-19 05:02:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:55,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-19 05:02:55,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:55,127 INFO L225 Difference]: With dead ends: 219 [2023-11-19 05:02:55,127 INFO L226 Difference]: Without dead ends: 218 [2023-11-19 05:02:55,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:55,128 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 81 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:55,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 196 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-19 05:02:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-11-19 05:02:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 169 states have (on average 1.4792899408284024) internal successors, (250), 213 states have internal predecessors, (250), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 256 transitions. [2023-11-19 05:02:55,138 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 256 transitions. Word has length 38 [2023-11-19 05:02:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:55,139 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 256 transitions. [2023-11-19 05:02:55,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 256 transitions. [2023-11-19 05:02:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 05:02:55,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:55,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:55,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:55,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:55,355 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:55,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:55,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1492513594, now seen corresponding path program 1 times [2023-11-19 05:02:55,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:55,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913640727] [2023-11-19 05:02:55,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:55,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:55,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764909476] [2023-11-19 05:02:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:55,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:55,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:55,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 05:02:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:55,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:55,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:55,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:55,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913640727] [2023-11-19 05:02:55,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764909476] [2023-11-19 05:02:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764909476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:55,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:55,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471677363] [2023-11-19 05:02:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:55,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:55,653 INFO L87 Difference]: Start difference. First operand 218 states and 256 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:55,870 INFO L93 Difference]: Finished difference Result 226 states and 263 transitions. [2023-11-19 05:02:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:55,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-19 05:02:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:55,872 INFO L225 Difference]: With dead ends: 226 [2023-11-19 05:02:55,873 INFO L226 Difference]: Without dead ends: 225 [2023-11-19 05:02:55,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:55,874 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 138 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:55,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 98 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-19 05:02:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2023-11-19 05:02:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 170 states have (on average 1.4764705882352942) internal successors, (251), 214 states have internal predecessors, (251), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 257 transitions. [2023-11-19 05:02:55,885 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 257 transitions. Word has length 38 [2023-11-19 05:02:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:55,886 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 257 transitions. [2023-11-19 05:02:55,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 257 transitions. [2023-11-19 05:02:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 05:02:55,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:55,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:55,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:56,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:56,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 147565895, now seen corresponding path program 1 times [2023-11-19 05:02:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044514520] [2023-11-19 05:02:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:56,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:56,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825625409] [2023-11-19 05:02:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:56,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:56,094 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:56,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 05:02:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:56,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:56,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:56,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:56,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:56,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044514520] [2023-11-19 05:02:56,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:56,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825625409] [2023-11-19 05:02:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825625409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:56,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:56,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282566302] [2023-11-19 05:02:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:56,186 INFO L87 Difference]: Start difference. First operand 219 states and 257 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:56,236 INFO L93 Difference]: Finished difference Result 236 states and 274 transitions. [2023-11-19 05:02:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:56,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-19 05:02:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:56,238 INFO L225 Difference]: With dead ends: 236 [2023-11-19 05:02:56,238 INFO L226 Difference]: Without dead ends: 235 [2023-11-19 05:02:56,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:56,239 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 37 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:56,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 302 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-19 05:02:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2023-11-19 05:02:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 178 states have (on average 1.4662921348314606) internal successors, (261), 222 states have internal predecessors, (261), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2023-11-19 05:02:56,250 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 39 [2023-11-19 05:02:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2023-11-19 05:02:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2023-11-19 05:02:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 05:02:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:56,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:56,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:56,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 05:02:56,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:56,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash 976718965, now seen corresponding path program 1 times [2023-11-19 05:02:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484560773] [2023-11-19 05:02:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:56,480 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138673249] [2023-11-19 05:02:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:56,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:56,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:56,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 05:02:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:56,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:56,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:56,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:56,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484560773] [2023-11-19 05:02:56,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138673249] [2023-11-19 05:02:56,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138673249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:56,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:56,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575583439] [2023-11-19 05:02:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:56,598 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:56,761 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2023-11-19 05:02:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:56,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-19 05:02:56,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:56,764 INFO L225 Difference]: With dead ends: 227 [2023-11-19 05:02:56,764 INFO L226 Difference]: Without dead ends: 225 [2023-11-19 05:02:56,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:56,766 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 78 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:56,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 192 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-19 05:02:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-11-19 05:02:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 178 states have (on average 1.449438202247191) internal successors, (258), 220 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 264 transitions. [2023-11-19 05:02:56,779 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 264 transitions. Word has length 39 [2023-11-19 05:02:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:56,779 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 264 transitions. [2023-11-19 05:02:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 264 transitions. [2023-11-19 05:02:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 05:02:56,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:56,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:56,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 05:02:57,000 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:57,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash 213516968, now seen corresponding path program 1 times [2023-11-19 05:02:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:57,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636450188] [2023-11-19 05:02:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:57,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421815347] [2023-11-19 05:02:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:57,013 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:57,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 05:02:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:57,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:57,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:57,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:57,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636450188] [2023-11-19 05:02:57,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421815347] [2023-11-19 05:02:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421815347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:57,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:57,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227106731] [2023-11-19 05:02:57,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:57,117 INFO L87 Difference]: Start difference. First operand 225 states and 264 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:57,188 INFO L93 Difference]: Finished difference Result 269 states and 278 transitions. [2023-11-19 05:02:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:02:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-19 05:02:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:57,198 INFO L225 Difference]: With dead ends: 269 [2023-11-19 05:02:57,198 INFO L226 Difference]: Without dead ends: 268 [2023-11-19 05:02:57,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:57,199 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 66 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:57,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 294 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-19 05:02:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 233. [2023-11-19 05:02:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 186 states have (on average 1.435483870967742) internal successors, (267), 228 states have internal predecessors, (267), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2023-11-19 05:02:57,213 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 40 [2023-11-19 05:02:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:57,213 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2023-11-19 05:02:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2023-11-19 05:02:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:02:57,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:57,214 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:57,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:57,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 05:02:57,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:57,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 76905769, now seen corresponding path program 1 times [2023-11-19 05:02:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:57,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544703148] [2023-11-19 05:02:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:57,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:57,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062586288] [2023-11-19 05:02:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:57,448 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:57,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 05:02:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:57,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:02:57,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:57,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:57,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544703148] [2023-11-19 05:02:57,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062586288] [2023-11-19 05:02:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062586288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:57,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639219547] [2023-11-19 05:02:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:02:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:02:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:02:57,566 INFO L87 Difference]: Start difference. First operand 233 states and 273 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:57,610 INFO L93 Difference]: Finished difference Result 233 states and 273 transitions. [2023-11-19 05:02:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:02:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-19 05:02:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:57,613 INFO L225 Difference]: With dead ends: 233 [2023-11-19 05:02:57,613 INFO L226 Difference]: Without dead ends: 232 [2023-11-19 05:02:57,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:57,614 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 156 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-19 05:02:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-11-19 05:02:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 186 states have (on average 1.424731182795699) internal successors, (265), 227 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 271 transitions. [2023-11-19 05:02:57,625 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 271 transitions. Word has length 41 [2023-11-19 05:02:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:57,625 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 271 transitions. [2023-11-19 05:02:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 271 transitions. [2023-11-19 05:02:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 05:02:57,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:57,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:57,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:57,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 05:02:57,840 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:02:57,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1910888408, now seen corresponding path program 1 times [2023-11-19 05:02:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929480775] [2023-11-19 05:02:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:57,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:02:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565773281] [2023-11-19 05:02:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:57,849 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 05:02:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:57,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:02:57,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:57,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:02:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:58,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:58,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929480775] [2023-11-19 05:02:58,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:02:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565773281] [2023-11-19 05:02:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565773281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:02:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1639103120] [2023-11-19 05:02:58,078 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-19 05:02:58,078 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:02:58,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:02:58,089 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:02:58,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:03:05,548 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-11-19 05:03:05,819 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:03:29,061 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14216#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (= |ULTIMATE.start_main_~xy~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post6#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-11-19 05:03:29,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:03:29,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:03:29,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-19 05:03:29,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304799594] [2023-11-19 05:03:29,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:03:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:03:29,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:03:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=889, Unknown=1, NotChecked=0, Total=1056 [2023-11-19 05:03:29,064 INFO L87 Difference]: Start difference. First operand 232 states and 271 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:03:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:29,581 INFO L93 Difference]: Finished difference Result 638 states and 761 transitions. [2023-11-19 05:03:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:03:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-19 05:03:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:29,585 INFO L225 Difference]: With dead ends: 638 [2023-11-19 05:03:29,585 INFO L226 Difference]: Without dead ends: 576 [2023-11-19 05:03:29,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 80 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=236, Invalid=1323, Unknown=1, NotChecked=0, Total=1560 [2023-11-19 05:03:29,587 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 227 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:29,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 699 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-19 05:03:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 404. [2023-11-19 05:03:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 351 states have (on average 1.4757834757834758) internal successors, (518), 392 states have internal predecessors, (518), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:03:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 532 transitions. [2023-11-19 05:03:29,610 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 532 transitions. Word has length 42 [2023-11-19 05:03:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:29,610 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 532 transitions. [2023-11-19 05:03:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:03:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 532 transitions. [2023-11-19 05:03:29,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 05:03:29,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:29,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:29,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 05:03:29,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 05:03:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1882244330, now seen corresponding path program 1 times [2023-11-19 05:03:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210879986] [2023-11-19 05:03:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:29,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:03:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305335611] [2023-11-19 05:03:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:29,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:29,838 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:29,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36e898d1-1a64-4e77-9f05-2165e0b529c8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 05:03:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:29,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:03:29,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:30,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:30,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210879986] [2023-11-19 05:03:30,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:03:30,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305335611] [2023-11-19 05:03:30,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305335611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:30,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720070775] [2023-11-19 05:03:30,722 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-19 05:03:30,723 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:03:30,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:03:30,723 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:03:30,723 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:03:34,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 156 for LOIs [2023-11-19 05:03:35,132 INFO L180 IcfgInterpreter]: Interpretation finished