./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/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_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/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_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/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 5f094e7ea34d2025ab25ab51a4a0b06d8f845826c76dbd06e91f3d4a761fa19b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:01,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:01,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:49:01,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:01,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:02,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:02,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:02,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:02,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:02,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:02,019 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:02,020 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:02,020 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:02,022 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:02,023 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:02,024 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:02,024 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:02,025 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:02,025 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:02,026 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:02,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:02,027 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:02,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:02,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:02,029 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:49:02,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:02,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:49:02,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:02,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:02,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:02,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:02,034 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:49:02,034 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:02,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:49:02,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:02,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:02,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:02,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:02,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:02,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:02,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:02,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:02,038 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:02,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:02,039 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:02,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:02,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:02,040 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_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f094e7ea34d2025ab25ab51a4a0b06d8f845826c76dbd06e91f3d4a761fa19b [2023-11-19 04:49:02,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:02,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:02,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:02,411 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:02,411 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:02,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2023-11-19 04:49:05,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:05,942 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:05,943 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2023-11-19 04:49:05,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/data/83bf2604e/a3cd7c281e6243a79c662d98ef90c32c/FLAGef854f0f1 [2023-11-19 04:49:05,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/data/83bf2604e/a3cd7c281e6243a79c662d98ef90c32c [2023-11-19 04:49:05,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:05,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:05,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:05,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:05,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:05,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:05" (1/1) ... [2023-11-19 04:49:05,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419c39c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:05, skipping insertion in model container [2023-11-19 04:49:05,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:05" (1/1) ... [2023-11-19 04:49:06,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:49:06,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:06,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:49:06,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:06,276 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:49:06,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06 WrapperNode [2023-11-19 04:49:06,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:06,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:06,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:49:06,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:49:06,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,321 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2023-11-19 04:49:06,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:06,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:49:06,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:49:06,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:49:06,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:49:06,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:49:06,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:49:06,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:49:06,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (1/1) ... [2023-11-19 04:49:06,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:06,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:49:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:49:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:49:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:49:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:49:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:49:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:49:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:49:06,532 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:49:06,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:49:06,895 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:49:06,929 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:49:06,929 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:49:06,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:06 BoogieIcfgContainer [2023-11-19 04:49:06,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:49:06,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:49:06,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:49:06,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:49:06,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:05" (1/3) ... [2023-11-19 04:49:06,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db5aba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:06, skipping insertion in model container [2023-11-19 04:49:06,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:06" (2/3) ... [2023-11-19 04:49:06,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db5aba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:06, skipping insertion in model container [2023-11-19 04:49:06,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:06" (3/3) ... [2023-11-19 04:49:06,955 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.c [2023-11-19 04:49:06,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:49:06,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 04:49:07,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:07,050 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;@b69534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:07,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-19 04:49:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 04:49:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:49:07,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:07,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:49:07,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:07,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash 164556, now seen corresponding path program 1 times [2023-11-19 04:49:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881629234] [2023-11-19 04:49:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:07,384 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 04:49:07,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881629234] [2023-11-19 04:49:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881629234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527127573] [2023-11-19 04:49:07,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:07,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:07,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:49:07,435 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 04:49:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:07,585 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2023-11-19 04:49:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:07,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 04:49:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:07,599 INFO L225 Difference]: With dead ends: 133 [2023-11-19 04:49:07,599 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 04:49:07,603 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 04:49:07,607 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:07,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 230 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 04:49:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-19 04:49:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 68 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 04:49:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2023-11-19 04:49:07,669 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 3 [2023-11-19 04:49:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:07,669 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2023-11-19 04:49:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 04:49:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2023-11-19 04:49:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:49:07,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:07,672 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:07,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:49:07,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:07,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 283744573, now seen corresponding path program 1 times [2023-11-19 04:49:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642818313] [2023-11-19 04:49:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:07,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:07,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432809179] [2023-11-19 04:49:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:07,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:07,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:07,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:07,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:49:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:07,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:07,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:07,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:07,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642818313] [2023-11-19 04:49:07,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432809179] [2023-11-19 04:49:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432809179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:07,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:07,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367912616] [2023-11-19 04:49:07,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:07,951 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:49:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:08,091 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2023-11-19 04:49:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2023-11-19 04:49:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:08,094 INFO L225 Difference]: With dead ends: 166 [2023-11-19 04:49:08,095 INFO L226 Difference]: Without dead ends: 114 [2023-11-19 04:49:08,096 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 04:49:08,097 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:08,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 116 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-19 04:49:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 98. [2023-11-19 04:49:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 86 states have internal predecessors, (101), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:49:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2023-11-19 04:49:08,117 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 12 [2023-11-19 04:49:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:08,119 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2023-11-19 04:49:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:49:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2023-11-19 04:49:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:49:08,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:08,121 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:08,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:49:08,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 04:49:08,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:08,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1809788200, now seen corresponding path program 1 times [2023-11-19 04:49:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458513978] [2023-11-19 04:49:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:08,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:08,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420327008] [2023-11-19 04:49:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:08,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:08,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:08,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:08,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:49:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:08,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:08,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:08,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458513978] [2023-11-19 04:49:08,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420327008] [2023-11-19 04:49:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420327008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:08,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:08,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264970537] [2023-11-19 04:49:08,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:08,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:08,518 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:08,588 INFO L93 Difference]: Finished difference Result 130 states and 157 transitions. [2023-11-19 04:49:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:08,589 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-11-19 04:49:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:08,591 INFO L225 Difference]: With dead ends: 130 [2023-11-19 04:49:08,592 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 04:49:08,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 04:49:08,594 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:08,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 97 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 04:49:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2023-11-19 04:49:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 71 states have (on average 1.704225352112676) internal successors, (121), 97 states have internal predecessors, (121), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:49:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2023-11-19 04:49:08,617 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 18 [2023-11-19 04:49:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:08,617 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2023-11-19 04:49:08,618 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2023-11-19 04:49:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:49:08,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:08,619 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:08,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:08,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:08,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:08,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -268860796, now seen corresponding path program 1 times [2023-11-19 04:49:08,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:08,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802947759] [2023-11-19 04:49:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:08,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:08,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928799177] [2023-11-19 04:49:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:08,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:08,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:08,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:08,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:49:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:08,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:08,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:09,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:09,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802947759] [2023-11-19 04:49:09,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928799177] [2023-11-19 04:49:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928799177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:09,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:09,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702538453] [2023-11-19 04:49:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:09,061 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:09,147 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2023-11-19 04:49:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-11-19 04:49:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:09,161 INFO L225 Difference]: With dead ends: 111 [2023-11-19 04:49:09,164 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 04:49:09,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:49:09,168 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:09,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 186 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 04:49:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-19 04:49:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.647887323943662) internal successors, (117), 95 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:49:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2023-11-19 04:49:09,204 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 19 [2023-11-19 04:49:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:09,205 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2023-11-19 04:49:09,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2023-11-19 04:49:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:49:09,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:09,208 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:09,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:09,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:09,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash -268859290, now seen corresponding path program 1 times [2023-11-19 04:49:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:09,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494386443] [2023-11-19 04:49:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:09,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:09,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:09,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50891255] [2023-11-19 04:49:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:09,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:09,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:09,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:49:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:09,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:09,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:09,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:09,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494386443] [2023-11-19 04:49:09,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50891255] [2023-11-19 04:49:09,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50891255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:09,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462229659] [2023-11-19 04:49:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:09,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:09,570 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:09,635 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2023-11-19 04:49:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:09,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-11-19 04:49:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:09,649 INFO L225 Difference]: With dead ends: 123 [2023-11-19 04:49:09,649 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 04:49:09,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 04:49:09,651 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 25 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:09,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 115 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 04:49:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2023-11-19 04:49:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 95 states have internal predecessors, (116), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:49:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 140 transitions. [2023-11-19 04:49:09,684 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 140 transitions. Word has length 19 [2023-11-19 04:49:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:09,685 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 140 transitions. [2023-11-19 04:49:09,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 140 transitions. [2023-11-19 04:49:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:49:09,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:09,686 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:09,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:09,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:09,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash 255249993, now seen corresponding path program 1 times [2023-11-19 04:49:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792629046] [2023-11-19 04:49:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:09,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551467452] [2023-11-19 04:49:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:09,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:09,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:09,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:09,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:49:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:09,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:09,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:10,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:10,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792629046] [2023-11-19 04:49:10,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551467452] [2023-11-19 04:49:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551467452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:10,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309134529] [2023-11-19 04:49:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:10,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:10,086 INFO L87 Difference]: Start difference. First operand 109 states and 140 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:10,176 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2023-11-19 04:49:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:49:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-11-19 04:49:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:10,179 INFO L225 Difference]: With dead ends: 116 [2023-11-19 04:49:10,179 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 04:49:10,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:49:10,181 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 18 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:10,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 227 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 04:49:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2023-11-19 04:49:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 99 states have internal predecessors, (119), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:49:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2023-11-19 04:49:10,221 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 20 [2023-11-19 04:49:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:10,221 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2023-11-19 04:49:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2023-11-19 04:49:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:49:10,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:10,223 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:10,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:49:10,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:10,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 482110009, now seen corresponding path program 1 times [2023-11-19 04:49:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:10,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800815973] [2023-11-19 04:49:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:10,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346874488] [2023-11-19 04:49:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:10,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:10,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:10,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:49:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:10,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:10,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:10,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:10,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800815973] [2023-11-19 04:49:10,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346874488] [2023-11-19 04:49:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346874488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:10,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:49:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213345910] [2023-11-19 04:49:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:49:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:49:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:49:10,578 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:10,664 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2023-11-19 04:49:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:49:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-19 04:49:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:10,666 INFO L225 Difference]: With dead ends: 128 [2023-11-19 04:49:10,667 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 04:49:10,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:49:10,668 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 15 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:10,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 273 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 04:49:10,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2023-11-19 04:49:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 100 states have internal predecessors, (119), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:49:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2023-11-19 04:49:10,684 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 22 [2023-11-19 04:49:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:10,684 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2023-11-19 04:49:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2023-11-19 04:49:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:49:10,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:10,686 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:10,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:10,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:49:10,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:10,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 482110027, now seen corresponding path program 1 times [2023-11-19 04:49:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893031395] [2023-11-19 04:49:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:10,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010459387] [2023-11-19 04:49:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:10,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:10,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:10,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:49:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:10,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:11,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:11,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:11,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893031395] [2023-11-19 04:49:11,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010459387] [2023-11-19 04:49:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010459387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216565864] [2023-11-19 04:49:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:11,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:11,038 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:11,101 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2023-11-19 04:49:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:11,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-19 04:49:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:11,103 INFO L225 Difference]: With dead ends: 161 [2023-11-19 04:49:11,104 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 04:49:11,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 04:49:11,105 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 04:49:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 136. [2023-11-19 04:49:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 118 states have internal predecessors, (145), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 04:49:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 173 transitions. [2023-11-19 04:49:11,123 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 173 transitions. Word has length 22 [2023-11-19 04:49:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:11,124 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 173 transitions. [2023-11-19 04:49:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 173 transitions. [2023-11-19 04:49:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 04:49:11,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:11,126 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:11,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:11,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:49:11,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:11,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -548729267, now seen corresponding path program 1 times [2023-11-19 04:49:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104620316] [2023-11-19 04:49:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:11,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108949859] [2023-11-19 04:49:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:11,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:11,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:11,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:11,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:49:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:11,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:11,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:11,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:11,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104620316] [2023-11-19 04:49:11,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108949859] [2023-11-19 04:49:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108949859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:11,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:11,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134303000] [2023-11-19 04:49:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:11,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:11,541 INFO L87 Difference]: Start difference. First operand 136 states and 173 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:11,620 INFO L93 Difference]: Finished difference Result 153 states and 180 transitions. [2023-11-19 04:49:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-19 04:49:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:11,623 INFO L225 Difference]: With dead ends: 153 [2023-11-19 04:49:11,623 INFO L226 Difference]: Without dead ends: 151 [2023-11-19 04:49:11,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 04:49:11,624 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:11,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-19 04:49:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 137. [2023-11-19 04:49:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 119 states have internal predecessors, (143), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 04:49:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2023-11-19 04:49:11,641 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 24 [2023-11-19 04:49:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:11,642 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2023-11-19 04:49:11,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2023-11-19 04:49:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 04:49:11,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:11,643 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:11,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 04:49:11,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -395429921, now seen corresponding path program 1 times [2023-11-19 04:49:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221046248] [2023-11-19 04:49:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:11,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:11,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985844883] [2023-11-19 04:49:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:11,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:11,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:11,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:49:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:11,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:11,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:12,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:12,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221046248] [2023-11-19 04:49:12,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985844883] [2023-11-19 04:49:12,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985844883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:12,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:12,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933765813] [2023-11-19 04:49:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:12,040 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:12,147 INFO L93 Difference]: Finished difference Result 137 states and 171 transitions. [2023-11-19 04:49:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-19 04:49:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:12,150 INFO L225 Difference]: With dead ends: 137 [2023-11-19 04:49:12,150 INFO L226 Difference]: Without dead ends: 136 [2023-11-19 04:49:12,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:49:12,152 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 12 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 241 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-19 04:49:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-19 04:49:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 118 states have internal predecessors, (142), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 04:49:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2023-11-19 04:49:12,169 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 24 [2023-11-19 04:49:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:12,169 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2023-11-19 04:49:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2023-11-19 04:49:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:49:12,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:12,171 INFO L195 NwaCegarLoop]: trace histogram [3, 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 04:49:12,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 04:49:12,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:49:12,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash 169261997, now seen corresponding path program 1 times [2023-11-19 04:49:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875526784] [2023-11-19 04:49:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:12,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:12,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002598409] [2023-11-19 04:49:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:12,412 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:12,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:49:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:12,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:12,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:12,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:12,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875526784] [2023-11-19 04:49:12,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:12,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002598409] [2023-11-19 04:49:12,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002598409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:12,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:12,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937504241] [2023-11-19 04:49:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:12,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:12,628 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:12,787 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2023-11-19 04:49:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-19 04:49:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:12,790 INFO L225 Difference]: With dead ends: 142 [2023-11-19 04:49:12,790 INFO L226 Difference]: Without dead ends: 141 [2023-11-19 04:49:12,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 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 04:49:12,791 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 34 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:12,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 141 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-19 04:49:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2023-11-19 04:49:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 118 states have internal predecessors, (141), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 04:49:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 169 transitions. [2023-11-19 04:49:12,808 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 169 transitions. Word has length 25 [2023-11-19 04:49:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:12,809 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 169 transitions. [2023-11-19 04:49:12,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:49:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 169 transitions. [2023-11-19 04:49:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:49:12,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:12,811 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:12,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:13,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 04:49:13,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:13,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash 349588510, now seen corresponding path program 1 times [2023-11-19 04:49:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401896121] [2023-11-19 04:49:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:13,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:13,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56091147] [2023-11-19 04:49:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:13,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:13,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:13,044 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:13,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:49:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:13,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:13,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:13,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:49:13,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401896121] [2023-11-19 04:49:13,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56091147] [2023-11-19 04:49:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56091147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420540371] [2023-11-19 04:49:13,274 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-19 04:49:13,275 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:13,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:13,293 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:13,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:17,450 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-19 04:49:17,453 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:20,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4126#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 1073741823 (div (* (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| (div (* (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= (div (* (- 1) |ULTIMATE.start_main_~d~0#1|) 2) 1073741824) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post6#1|) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 2147483647) (= (+ |ULTIMATE.start_main_~p~0#1| (* 2 (div (* (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) 0) (= |ULTIMATE.start_main_~B~0#1| 1) (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0))' at error location [2023-11-19 04:49:20,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:20,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-19 04:49:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948094260] [2023-11-19 04:49:20,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:49:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:49:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:49:20,197 INFO L87 Difference]: Start difference. First operand 136 states and 169 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:49:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:20,445 INFO L93 Difference]: Finished difference Result 270 states and 336 transitions. [2023-11-19 04:49:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:49:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2023-11-19 04:49:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:20,447 INFO L225 Difference]: With dead ends: 270 [2023-11-19 04:49:20,448 INFO L226 Difference]: Without dead ends: 188 [2023-11-19 04:49:20,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:49:20,450 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 53 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:20,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 474 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-19 04:49:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2023-11-19 04:49:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 123 states have (on average 1.4715447154471544) internal successors, (181), 146 states have internal predecessors, (181), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:49:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 221 transitions. [2023-11-19 04:49:20,470 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 221 transitions. Word has length 28 [2023-11-19 04:49:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:20,471 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 221 transitions. [2023-11-19 04:49:20,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:49:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 221 transitions. [2023-11-19 04:49:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:49:20,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:20,475 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:20,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 04:49:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:49:20,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:20,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash -274606017, now seen corresponding path program 1 times [2023-11-19 04:49:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828563347] [2023-11-19 04:49:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:20,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:20,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464221546] [2023-11-19 04:49:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:20,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:20,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:20,703 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:20,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:49:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:20,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:20,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:49:20,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:20,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828563347] [2023-11-19 04:49:20,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464221546] [2023-11-19 04:49:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464221546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:20,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:20,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327753699] [2023-11-19 04:49:20,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:20,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:49:20,864 INFO L87 Difference]: Start difference. First operand 172 states and 221 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:20,951 INFO L93 Difference]: Finished difference Result 184 states and 229 transitions. [2023-11-19 04:49:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2023-11-19 04:49:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:20,953 INFO L225 Difference]: With dead ends: 184 [2023-11-19 04:49:20,954 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 04:49:20,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 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 04:49:20,955 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 71 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:20,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 117 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 04:49:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2023-11-19 04:49:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 142 states have internal predecessors, (169), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:49:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 209 transitions. [2023-11-19 04:49:20,972 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 209 transitions. Word has length 32 [2023-11-19 04:49:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:20,972 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 209 transitions. [2023-11-19 04:49:20,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:20,972 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 209 transitions. [2023-11-19 04:49:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:49:20,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:20,974 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:20,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:49:21,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:21,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash 77148117, now seen corresponding path program 1 times [2023-11-19 04:49:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:21,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146844160] [2023-11-19 04:49:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:21,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941240356] [2023-11-19 04:49:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:21,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:21,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:21,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:21,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:49:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:21,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:21,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:49:21,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:21,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146844160] [2023-11-19 04:49:21,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941240356] [2023-11-19 04:49:21,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941240356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:49:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1188933741] [2023-11-19 04:49:21,443 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 04:49:21,443 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:21,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:21,444 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:21,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:24,124 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-19 04:49:24,126 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:26,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5355#(and (<= 1 |#StackHeapBarrier|) (<= 2147483648 |ULTIMATE.start_main_~p~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-11-19 04:49:26,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:26,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:49:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-19 04:49:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860375402] [2023-11-19 04:49:26,207 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:26,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:49:26,210 INFO L87 Difference]: Start difference. First operand 168 states and 209 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:26,358 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2023-11-19 04:49:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-11-19 04:49:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:26,361 INFO L225 Difference]: With dead ends: 259 [2023-11-19 04:49:26,361 INFO L226 Difference]: Without dead ends: 255 [2023-11-19 04:49:26,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:49:26,363 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:26,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 132 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-19 04:49:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 222. [2023-11-19 04:49:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 171 states have (on average 1.391812865497076) internal successors, (238), 190 states have internal predecessors, (238), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 04:49:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 290 transitions. [2023-11-19 04:49:26,385 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 290 transitions. Word has length 33 [2023-11-19 04:49:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:26,386 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 290 transitions. [2023-11-19 04:49:26,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 290 transitions. [2023-11-19 04:49:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 04:49:26,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:26,388 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:26,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:26,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:26,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1020351912, now seen corresponding path program 1 times [2023-11-19 04:49:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:26,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375630799] [2023-11-19 04:49:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:26,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:26,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354286862] [2023-11-19 04:49:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:26,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:26,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:26,615 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 04:49:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:26,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:49:26,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:49:26,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:26,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375630799] [2023-11-19 04:49:26,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:26,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354286862] [2023-11-19 04:49:26,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354286862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:26,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:26,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:26,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546795522] [2023-11-19 04:49:26,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:26,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:26,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:26,804 INFO L87 Difference]: Start difference. First operand 222 states and 290 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:26,947 INFO L93 Difference]: Finished difference Result 227 states and 294 transitions. [2023-11-19 04:49:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-11-19 04:49:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:26,950 INFO L225 Difference]: With dead ends: 227 [2023-11-19 04:49:26,950 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 04:49:26,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:26,951 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:26,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 126 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 04:49:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-19 04:49:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 160 states have (on average 1.4125) internal successors, (226), 179 states have internal predecessors, (226), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:49:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 274 transitions. [2023-11-19 04:49:26,972 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 274 transitions. Word has length 38 [2023-11-19 04:49:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:26,972 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 274 transitions. [2023-11-19 04:49:26,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:49:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 274 transitions. [2023-11-19 04:49:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:49:26,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:26,974 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 04:49:26,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:27,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:27,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:27,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -871447772, now seen corresponding path program 1 times [2023-11-19 04:49:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297050347] [2023-11-19 04:49:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:27,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:27,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344097163] [2023-11-19 04:49:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:27,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:27,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:27,211 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:27,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 04:49:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:27,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:27,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:49:27,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:49:27,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297050347] [2023-11-19 04:49:27,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344097163] [2023-11-19 04:49:27,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344097163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913436931] [2023-11-19 04:49:27,412 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 04:49:27,412 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:27,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:27,413 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:27,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:30,053 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-19 04:49:30,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:31,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6809#(and (<= 1 |#StackHeapBarrier|) (<= 1073741824 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))' at error location [2023-11-19 04:49:31,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:31,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:31,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 04:49:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32476580] [2023-11-19 04:49:31,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:31,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:49:31,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:49:31,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:49:31,908 INFO L87 Difference]: Start difference. First operand 209 states and 274 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 04:49:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:32,121 INFO L93 Difference]: Finished difference Result 347 states and 427 transitions. [2023-11-19 04:49:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:49:32,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 39 [2023-11-19 04:49:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:32,125 INFO L225 Difference]: With dead ends: 347 [2023-11-19 04:49:32,125 INFO L226 Difference]: Without dead ends: 345 [2023-11-19 04:49:32,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:49:32,126 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 226 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:32,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 210 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:49:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-19 04:49:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 271. [2023-11-19 04:49:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 213 states have (on average 1.4225352112676057) internal successors, (303), 232 states have internal predecessors, (303), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 04:49:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 369 transitions. [2023-11-19 04:49:32,152 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 369 transitions. Word has length 39 [2023-11-19 04:49:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:32,153 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 369 transitions. [2023-11-19 04:49:32,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 04:49:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 369 transitions. [2023-11-19 04:49:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:49:32,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:32,155 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:32,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:49:32,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:32,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 783346665, now seen corresponding path program 1 times [2023-11-19 04:49:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:32,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710607957] [2023-11-19 04:49:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:32,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659277491] [2023-11-19 04:49:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:32,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:32,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:32,397 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:32,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 04:49:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:32,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:49:32,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:49:32,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:49:32,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710607957] [2023-11-19 04:49:32,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659277491] [2023-11-19 04:49:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659277491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552734746] [2023-11-19 04:49:32,709 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-19 04:49:32,709 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:32,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:32,710 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:32,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:35,155 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-11-19 04:49:35,157 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:37,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1552734746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:37,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:37,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [7, 8] total 32 [2023-11-19 04:49:37,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567533745] [2023-11-19 04:49:37,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:37,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 04:49:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 04:49:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:49:37,954 INFO L87 Difference]: Start difference. First operand 271 states and 369 transitions. Second operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 04:49:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:43,242 INFO L93 Difference]: Finished difference Result 342 states and 456 transitions. [2023-11-19 04:49:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 04:49:43,242 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) Word has length 45 [2023-11-19 04:49:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:43,245 INFO L225 Difference]: With dead ends: 342 [2023-11-19 04:49:43,245 INFO L226 Difference]: Without dead ends: 332 [2023-11-19 04:49:43,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=417, Invalid=2445, Unknown=0, NotChecked=0, Total=2862 [2023-11-19 04:49:43,248 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 209 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:43,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 146 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 04:49:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-19 04:49:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 289. [2023-11-19 04:49:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 229 states have (on average 1.3580786026200873) internal successors, (311), 247 states have internal predecessors, (311), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 04:49:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 381 transitions. [2023-11-19 04:49:43,286 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 381 transitions. Word has length 45 [2023-11-19 04:49:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 381 transitions. [2023-11-19 04:49:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 04:49:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 381 transitions. [2023-11-19 04:49:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 04:49:43,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:43,289 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:43,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:43,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 04:49:43,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:43,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash 108548766, now seen corresponding path program 1 times [2023-11-19 04:49:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:43,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407430986] [2023-11-19 04:49:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:43,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824115266] [2023-11-19 04:49:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:43,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:43,520 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:43,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 04:49:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:43,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:43,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 04:49:43,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:43,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:43,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407430986] [2023-11-19 04:49:43,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824115266] [2023-11-19 04:49:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824115266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060074037] [2023-11-19 04:49:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:43,604 INFO L87 Difference]: Start difference. First operand 289 states and 381 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:49:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:43,697 INFO L93 Difference]: Finished difference Result 289 states and 381 transitions. [2023-11-19 04:49:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2023-11-19 04:49:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:43,700 INFO L225 Difference]: With dead ends: 289 [2023-11-19 04:49:43,701 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 04:49:43,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 04:49:43,702 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:43,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 103 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 04:49:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-19 04:49:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 229 states have (on average 1.3449781659388647) internal successors, (308), 246 states have internal predecessors, (308), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 04:49:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 378 transitions. [2023-11-19 04:49:43,740 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 378 transitions. Word has length 60 [2023-11-19 04:49:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:43,740 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 378 transitions. [2023-11-19 04:49:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:49:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 378 transitions. [2023-11-19 04:49:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 04:49:43,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:43,742 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2023-11-19 04:49:43,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:49:43,958 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:43,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1085797788, now seen corresponding path program 1 times [2023-11-19 04:49:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710013204] [2023-11-19 04:49:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:43,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:43,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:43,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702617951] [2023-11-19 04:49:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:43,971 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:43,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 04:49:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:44,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:44,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 04:49:44,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 04:49:44,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710013204] [2023-11-19 04:49:44,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702617951] [2023-11-19 04:49:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702617951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1503455441] [2023-11-19 04:49:44,231 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 04:49:44,231 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:44,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:44,232 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:44,232 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:45,999 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-19 04:49:46,000 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1503455441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4] total 20 [2023-11-19 04:49:47,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114265511] [2023-11-19 04:49:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:49:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:49:47,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:49:47,687 INFO L87 Difference]: Start difference. First operand 288 states and 378 transitions. Second operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:49:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:48,822 INFO L93 Difference]: Finished difference Result 289 states and 378 transitions. [2023-11-19 04:49:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:49:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2023-11-19 04:49:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:48,825 INFO L225 Difference]: With dead ends: 289 [2023-11-19 04:49:48,825 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 04:49:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:49:48,827 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:48,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:49:48,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 04:49:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2023-11-19 04:49:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.3362445414847162) internal successors, (306), 245 states have internal predecessors, (306), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 04:49:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 376 transitions. [2023-11-19 04:49:48,870 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 376 transitions. Word has length 61 [2023-11-19 04:49:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:48,870 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 376 transitions. [2023-11-19 04:49:48,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:49:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 376 transitions. [2023-11-19 04:49:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 04:49:48,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:48,872 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:48,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:49,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:49,086 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:49,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash -929955434, now seen corresponding path program 1 times [2023-11-19 04:49:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:49,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300381172] [2023-11-19 04:49:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:49,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971955187] [2023-11-19 04:49:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:49,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:49,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:49,104 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:49,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 04:49:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:49,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:49:49,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 04:49:49,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:49,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:49,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300381172] [2023-11-19 04:49:49,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971955187] [2023-11-19 04:49:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971955187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550287385] [2023-11-19 04:49:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:49:49,380 INFO L87 Difference]: Start difference. First operand 287 states and 376 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:49:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:49,527 INFO L93 Difference]: Finished difference Result 429 states and 572 transitions. [2023-11-19 04:49:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:49,527 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-11-19 04:49:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:49,531 INFO L225 Difference]: With dead ends: 429 [2023-11-19 04:49:49,531 INFO L226 Difference]: Without dead ends: 427 [2023-11-19 04:49:49,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 04:49:49,533 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:49,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 117 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-19 04:49:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 392. [2023-11-19 04:49:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 322 states have (on average 1.3881987577639752) internal successors, (447), 338 states have internal predecessors, (447), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 04:49:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 541 transitions. [2023-11-19 04:49:49,598 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 541 transitions. Word has length 61 [2023-11-19 04:49:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:49,599 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 541 transitions. [2023-11-19 04:49:49,599 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:49:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 541 transitions. [2023-11-19 04:49:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 04:49:49,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:49,601 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:49,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:49,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:49,825 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:49,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1236152736, now seen corresponding path program 1 times [2023-11-19 04:49:49,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:49,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694887489] [2023-11-19 04:49:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:49,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875636698] [2023-11-19 04:49:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:49,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:49,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:49,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 04:49:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:49,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:49,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 04:49:50,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:50,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694887489] [2023-11-19 04:49:50,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875636698] [2023-11-19 04:49:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875636698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:50,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:50,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491887449] [2023-11-19 04:49:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:50,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:50,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:50,080 INFO L87 Difference]: Start difference. First operand 392 states and 541 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:49:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:50,340 INFO L93 Difference]: Finished difference Result 424 states and 567 transitions. [2023-11-19 04:49:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:50,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2023-11-19 04:49:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:50,345 INFO L225 Difference]: With dead ends: 424 [2023-11-19 04:49:50,345 INFO L226 Difference]: Without dead ends: 423 [2023-11-19 04:49:50,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:50,346 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:50,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 120 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:49:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-19 04:49:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 401. [2023-11-19 04:49:50,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 331 states have (on average 1.3776435045317221) internal successors, (456), 347 states have internal predecessors, (456), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 04:49:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 550 transitions. [2023-11-19 04:49:50,428 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 550 transitions. Word has length 62 [2023-11-19 04:49:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:50,429 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 550 transitions. [2023-11-19 04:49:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:49:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 550 transitions. [2023-11-19 04:49:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 04:49:50,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:50,430 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:50,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:50,645 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 04:49:50,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1236409933, now seen corresponding path program 1 times [2023-11-19 04:49:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550088628] [2023-11-19 04:49:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:50,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265130669] [2023-11-19 04:49:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:50,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:50,663 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:50,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bebc33-b87e-4a4c-b960-2a8a4c0182bd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 04:49:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:50,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:49:50,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:49:50,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 04:49:51,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:51,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550088628] [2023-11-19 04:49:51,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:51,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265130669] [2023-11-19 04:49:51,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265130669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [465124742] [2023-11-19 04:49:51,004 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-19 04:49:51,005 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:51,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:51,006 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:51,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs