./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/jain_5-1.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_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/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_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/jain_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/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_d5643ed7-6018-4008-9957-7af72da7ac92/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 ce25b6bd0efa145a105c85604d85a015d6e6bffce3769a218e2fa9a5cf656dc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:08:03,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:08:03,150 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:08:03,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:08:03,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:08:03,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:08:03,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:08:03,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:08:03,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:08:03,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:08:03,216 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:08:03,217 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:08:03,217 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:08:03,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:08:03,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:08:03,219 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:08:03,220 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:08:03,221 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:08:03,221 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:08:03,222 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:08:03,222 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:08:03,223 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:08:03,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:08:03,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:08:03,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:08:03,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:08:03,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:08:03,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:08:03,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:08:03,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:08:03,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:08:03,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:08:03,229 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:08:03,229 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:08:03,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:08:03,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:08:03,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:08:03,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:08:03,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:03,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:08:03,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:08:03,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:08:03,234 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:08:03,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:08:03,235 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:08:03,235 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:08:03,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:08:03,236 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_d5643ed7-6018-4008-9957-7af72da7ac92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce25b6bd0efa145a105c85604d85a015d6e6bffce3769a218e2fa9a5cf656dc9 [2023-11-19 05:08:03,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:08:03,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:08:03,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:08:03,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:08:03,623 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:08:03,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/bitvector/jain_5-1.c [2023-11-19 05:08:07,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:08:07,489 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:08:07,490 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/sv-benchmarks/c/bitvector/jain_5-1.c [2023-11-19 05:08:07,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/data/2c9174313/98f38d8e0fc349aba17e22dff0465d2e/FLAG1791ed94d [2023-11-19 05:08:07,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/data/2c9174313/98f38d8e0fc349aba17e22dff0465d2e [2023-11-19 05:08:07,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:08:07,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:08:07,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:07,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:08:07,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:08:07,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db0ba9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07, skipping insertion in model container [2023-11-19 05:08:07,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:08:07,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:07,835 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:08:07,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:07,875 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:08:07,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07 WrapperNode [2023-11-19 05:08:07,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:07,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:07,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:08:07,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:08:07,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,920 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 33 [2023-11-19 05:08:07,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:07,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:08:07,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:08:07,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:08:07,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:08:07,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:08:07,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:08:07,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:08:07,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (1/1) ... [2023-11-19 05:08:07,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:07,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:08,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:08:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:08:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:08:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:08:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:08:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:08:08,148 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:08:08,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:08,289 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:08,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:08,337 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:08:08,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:08 BoogieIcfgContainer [2023-11-19 05:08:08,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:08,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:08,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:08,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:08,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:07" (1/3) ... [2023-11-19 05:08:08,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508f2703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:08, skipping insertion in model container [2023-11-19 05:08:08,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:07" (2/3) ... [2023-11-19 05:08:08,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508f2703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:08, skipping insertion in model container [2023-11-19 05:08:08,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:08" (3/3) ... [2023-11-19 05:08:08,363 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_5-1.c [2023-11-19 05:08:08,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:08,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 05:08:08,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:08,458 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;@47f0b0ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:08,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:08:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:08:08,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:08,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:08:08,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:08,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash 69545, now seen corresponding path program 1 times [2023-11-19 05:08:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:08,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991500646] [2023-11-19 05:08:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:08,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:08,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991500646] [2023-11-19 05:08:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991500646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915292646] [2023-11-19 05:08:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:08,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:08,825 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:08,874 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-11-19 05:08:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:08:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:08,891 INFO L225 Difference]: With dead ends: 16 [2023-11-19 05:08:08,891 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 05:08:08,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:08,908 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:08,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 05:08:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-11-19 05:08:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 05:08:08,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2023-11-19 05:08:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:08,954 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 05:08:08,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:08,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 05:08:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:08:08,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:08,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:08:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:08,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2155940, now seen corresponding path program 1 times [2023-11-19 05:08:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720210548] [2023-11-19 05:08:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:08,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:09,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720210548] [2023-11-19 05:08:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720210548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:09,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:09,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823374942] [2023-11-19 05:08:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,103 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,145 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-19 05:08:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:09,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:08:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,147 INFO L225 Difference]: With dead ends: 14 [2023-11-19 05:08:09,147 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 05:08:09,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,150 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 05:08:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 05:08:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 05:08:09,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2023-11-19 05:08:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,164 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 05:08:09,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 05:08:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:09,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:09,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:09,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 66834187, now seen corresponding path program 1 times [2023-11-19 05:08:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008095216] [2023-11-19 05:08:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:09,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:09,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008095216] [2023-11-19 05:08:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008095216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:09,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954845784] [2023-11-19 05:08:09,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:09,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:09,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,226 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,245 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 05:08:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:09,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:08:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,246 INFO L225 Difference]: With dead ends: 13 [2023-11-19 05:08:09,247 INFO L226 Difference]: Without dead ends: 12 [2023-11-19 05:08:09,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,249 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-19 05:08:09,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 05:08:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 05:08:09,255 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2023-11-19 05:08:09,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,256 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 05:08:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 05:08:09,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:08:09,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:08:09,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:08:09,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:09,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2071859846, now seen corresponding path program 1 times [2023-11-19 05:08:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:09,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521034286] [2023-11-19 05:08:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:09,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:09,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521034286] [2023-11-19 05:08:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521034286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:09,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016082703] [2023-11-19 05:08:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:09,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,309 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,332 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-19 05:08:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:09,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-19 05:08:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,334 INFO L225 Difference]: With dead ends: 15 [2023-11-19 05:08:09,334 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 05:08:09,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:09,336 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 05:08:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 05:08:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-19 05:08:09,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2023-11-19 05:08:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,343 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-19 05:08:09,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-19 05:08:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:08:09,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,344 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:08:09,345 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:09,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1807486077, now seen corresponding path program 1 times [2023-11-19 05:08:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:09,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471475917] [2023-11-19 05:08:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:09,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471475917] [2023-11-19 05:08:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471475917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:09,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591329191] [2023-11-19 05:08:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:09,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:09,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:09,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:09,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:08:09,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:09,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591329191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:08:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-19 05:08:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818941553] [2023-11-19 05:08:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:08:09,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:08:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:08:09,766 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,835 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-19 05:08:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-11-19 05:08:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,837 INFO L225 Difference]: With dead ends: 14 [2023-11-19 05:08:09,837 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 05:08:09,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:08:09,839 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 05:08:09,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 05:08:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 05:08:09,844 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2023-11-19 05:08:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,845 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 05:08:09,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 05:08:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:09,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:08:09,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:10,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:10,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -197493494, now seen corresponding path program 1 times [2023-11-19 05:08:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:10,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465585348] [2023-11-19 05:08:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:10,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465585348] [2023-11-19 05:08:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465585348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766936125] [2023-11-19 05:08:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:10,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:10,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:10,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:08:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:08:10,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:10,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766936125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45706157] [2023-11-19 05:08:10,470 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:10,471 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:10,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:10,484 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:10,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:11,238 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:11,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '272#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-11-19 05:08:11,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:11,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-19 05:08:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359032878] [2023-11-19 05:08:11,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:08:11,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:08:11,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:08:11,507 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:11,636 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-19 05:08:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:08:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:08:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:11,640 INFO L225 Difference]: With dead ends: 23 [2023-11-19 05:08:11,640 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 05:08:11,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:08:11,646 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:11,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 9 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 05:08:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-11-19 05:08:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-19 05:08:11,660 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2023-11-19 05:08:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:11,661 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-19 05:08:11,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-19 05:08:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:11,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:11,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2023-11-19 05:08:11,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:11,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:08:11,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:11,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:11,884 INFO L85 PathProgramCache]: Analyzing trace with hash -812685204, now seen corresponding path program 1 times [2023-11-19 05:08:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905959034] [2023-11-19 05:08:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:11,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905959034] [2023-11-19 05:08:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905959034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397049664] [2023-11-19 05:08:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:11,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:12,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:08:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:12,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:12,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:12,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397049664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153976326] [2023-11-19 05:08:12,109 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:12,109 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:12,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:12,110 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:12,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:12,490 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:12,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '400#(and (<= 1 |#StackHeapBarrier|) (<= 2147483644 |ULTIMATE.start_main_~y~0#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:08:12,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:12,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 05:08:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756476212] [2023-11-19 05:08:12,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:12,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:08:12,700 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:12,752 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-11-19 05:08:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:08:12,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 11 [2023-11-19 05:08:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:12,755 INFO L225 Difference]: With dead ends: 30 [2023-11-19 05:08:12,756 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 05:08:12,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:08:12,758 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:12,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 05:08:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-11-19 05:08:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-11-19 05:08:12,767 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2023-11-19 05:08:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:12,768 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-11-19 05:08:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-19 05:08:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:08:12,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:12,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2023-11-19 05:08:12,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:12,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:12,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1560435382, now seen corresponding path program 2 times [2023-11-19 05:08:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:12,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863651776] [2023-11-19 05:08:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:13,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863651776] [2023-11-19 05:08:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863651776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396335399] [2023-11-19 05:08:13,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:08:13,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:13,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:13,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:13,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:08:13,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 05:08:13,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:13,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:08:13,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:13,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396335399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [631238424] [2023-11-19 05:08:13,675 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:13,675 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:13,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:13,676 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:13,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:13,955 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:14,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '603#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-11-19 05:08:14,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:14,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-19 05:08:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055985235] [2023-11-19 05:08:14,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:14,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 05:08:14,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 05:08:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:08:14,299 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:14,604 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2023-11-19 05:08:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:08:14,605 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:08:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:14,606 INFO L225 Difference]: With dead ends: 44 [2023-11-19 05:08:14,606 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 05:08:14,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=334, Invalid=856, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:08:14,608 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:14,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 17 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 05:08:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-11-19 05:08:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-11-19 05:08:14,616 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2023-11-19 05:08:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:14,617 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-11-19 05:08:14,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-11-19 05:08:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:08:14,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:14,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1] [2023-11-19 05:08:14,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:14,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:08:14,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:14,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -642719226, now seen corresponding path program 2 times [2023-11-19 05:08:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:14,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375716754] [2023-11-19 05:08:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:15,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375716754] [2023-11-19 05:08:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375716754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071254937] [2023-11-19 05:08:15,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:08:15,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:15,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:15,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:08:15,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:08:15,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:15,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:08:15,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:15,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071254937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245203274] [2023-11-19 05:08:15,387 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:15,387 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:15,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:15,388 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:15,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:15,646 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:16,033 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '895#(and (<= 1 |#StackHeapBarrier|) (<= 2147483644 |ULTIMATE.start_main_~y~0#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:08:16,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:16,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2023-11-19 05:08:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948320836] [2023-11-19 05:08:16,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:16,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 05:08:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 05:08:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:08:16,036 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:16,377 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2023-11-19 05:08:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 05:08:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 05:08:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:16,378 INFO L225 Difference]: With dead ends: 68 [2023-11-19 05:08:16,379 INFO L226 Difference]: Without dead ends: 67 [2023-11-19 05:08:16,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 05:08:16,381 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:16,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 43 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-19 05:08:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2023-11-19 05:08:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2023-11-19 05:08:16,391 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 26 [2023-11-19 05:08:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:16,392 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2023-11-19 05:08:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2023-11-19 05:08:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 05:08:16,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:16,394 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1] [2023-11-19 05:08:16,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:08:16,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1426586166, now seen corresponding path program 3 times [2023-11-19 05:08:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239298186] [2023-11-19 05:08:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:16,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239298186] [2023-11-19 05:08:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239298186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732828302] [2023-11-19 05:08:16,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:08:16,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:16,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:16,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:16,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:08:17,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:08:17,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:17,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 05:08:17,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:17,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732828302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:18,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [19750379] [2023-11-19 05:08:18,071 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:18,072 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:18,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:18,072 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:18,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:18,325 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:18,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1355#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-11-19 05:08:18,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:18,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-11-19 05:08:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544437521] [2023-11-19 05:08:18,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-19 05:08:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-19 05:08:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1950, Unknown=0, NotChecked=0, Total=2550 [2023-11-19 05:08:19,000 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:20,083 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2023-11-19 05:08:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-19 05:08:20,084 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 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 39 [2023-11-19 05:08:20,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:20,085 INFO L225 Difference]: With dead ends: 85 [2023-11-19 05:08:20,086 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 05:08:20,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1393, Invalid=3719, Unknown=0, NotChecked=0, Total=5112 [2023-11-19 05:08:20,089 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:20,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 39 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 05:08:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2023-11-19 05:08:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-11-19 05:08:20,112 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 39 [2023-11-19 05:08:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:20,115 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-11-19 05:08:20,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 46 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-11-19 05:08:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:08:20,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:20,120 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 1, 1] [2023-11-19 05:08:20,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:20,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:20,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:20,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash -271793748, now seen corresponding path program 3 times [2023-11-19 05:08:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554834967] [2023-11-19 05:08:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:21,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554834967] [2023-11-19 05:08:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554834967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395476156] [2023-11-19 05:08:21,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:08:21,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:21,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:21,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:08:21,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:08:21,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:21,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:08:21,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:21,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395476156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [142567956] [2023-11-19 05:08:22,094 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:22,094 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:22,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:22,095 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:22,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:22,290 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:23,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2008#(and (<= 1 |#StackHeapBarrier|) (<= 2147483644 |ULTIMATE.start_main_~y~0#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:08:23,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:23,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 47 [2023-11-19 05:08:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662069182] [2023-11-19 05:08:23,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-19 05:08:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-19 05:08:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=2318, Unknown=0, NotChecked=0, Total=2756 [2023-11-19 05:08:23,310 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:24,626 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2023-11-19 05:08:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-19 05:08:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 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 61 [2023-11-19 05:08:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:24,631 INFO L225 Difference]: With dead ends: 144 [2023-11-19 05:08:24,635 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 05:08:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 141 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2668 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1122, Invalid=6188, Unknown=0, NotChecked=0, Total=7310 [2023-11-19 05:08:24,642 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 233 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:08:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 05:08:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 133. [2023-11-19 05:08:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.0916030534351144) internal successors, (143), 132 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2023-11-19 05:08:24,672 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 61 [2023-11-19 05:08:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:24,672 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2023-11-19 05:08:24,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.8125) internal successors, (183), 48 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2023-11-19 05:08:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:08:24,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:24,683 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1] [2023-11-19 05:08:24,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:24,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:24,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:24,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 11339466, now seen corresponding path program 4 times [2023-11-19 05:08:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176614507] [2023-11-19 05:08:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:26,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176614507] [2023-11-19 05:08:26,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176614507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:26,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440865700] [2023-11-19 05:08:26,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:08:26,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:26,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:26,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:08:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 05:08:26,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:27,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:29,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440865700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:29,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174626233] [2023-11-19 05:08:29,115 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:29,115 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:29,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:29,116 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:29,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:29,308 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:31,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2970#(and (<= 4 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-11-19 05:08:31,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:31,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 93 [2023-11-19 05:08:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947304366] [2023-11-19 05:08:31,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-11-19 05:08:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-11-19 05:08:31,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2164, Invalid=7538, Unknown=0, NotChecked=0, Total=9702 [2023-11-19 05:08:31,159 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:35,194 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2023-11-19 05:08:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-19 05:08:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 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 79 [2023-11-19 05:08:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:35,198 INFO L225 Difference]: With dead ends: 167 [2023-11-19 05:08:35,199 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 05:08:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 153 SyntacticMatches, 16 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10232 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=5709, Invalid=15461, Unknown=0, NotChecked=0, Total=21170 [2023-11-19 05:08:35,209 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 261 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:35,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 79 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:08:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 05:08:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2023-11-19 05:08:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 160 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 166 transitions. [2023-11-19 05:08:35,226 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 166 transitions. Word has length 79 [2023-11-19 05:08:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:35,227 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 166 transitions. [2023-11-19 05:08:35,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.521276595744681) internal successors, (237), 94 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 166 transitions. [2023-11-19 05:08:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 05:08:35,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:35,230 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 1, 1] [2023-11-19 05:08:35,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:35,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:08:35,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:35,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1547823980, now seen corresponding path program 4 times [2023-11-19 05:08:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597597601] [2023-11-19 05:08:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:37,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597597601] [2023-11-19 05:08:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597597601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884924091] [2023-11-19 05:08:37,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:08:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:37,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:37,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:08:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:37,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 05:08:37,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:39,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884924091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [580464400] [2023-11-19 05:08:41,292 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:08:41,292 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:08:41,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:08:41,293 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:08:41,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:08:41,517 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:08:44,937 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4345#(and (<= 1 |#StackHeapBarrier|) (<= 2147483644 |ULTIMATE.start_main_~y~0#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:08:44,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:08:44,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:08:44,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 26, 26] total 103 [2023-11-19 05:08:44,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469723190] [2023-11-19 05:08:44,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:44,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-11-19 05:08:44,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-11-19 05:08:44,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1670, Invalid=10102, Unknown=0, NotChecked=0, Total=11772 [2023-11-19 05:08:44,947 INFO L87 Difference]: Start difference. First operand 161 states and 166 transitions. Second operand has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:49,898 INFO L93 Difference]: Finished difference Result 296 states and 323 transitions. [2023-11-19 05:08:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-11-19 05:08:49,899 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 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 131 [2023-11-19 05:08:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:49,901 INFO L225 Difference]: With dead ends: 296 [2023-11-19 05:08:49,902 INFO L226 Difference]: Without dead ends: 295 [2023-11-19 05:08:49,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 309 SyntacticMatches, 26 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12452 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4520, Invalid=28422, Unknown=0, NotChecked=0, Total=32942 [2023-11-19 05:08:49,906 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 54 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 4647 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 4672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:49,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1134 Invalid, 4672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 4647 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:08:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-19 05:08:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 273. [2023-11-19 05:08:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.088560885608856) internal successors, (295), 272 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2023-11-19 05:08:49,932 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 131 [2023-11-19 05:08:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2023-11-19 05:08:49,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.7788461538461537) internal successors, (393), 104 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2023-11-19 05:08:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-19 05:08:49,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:49,937 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1] [2023-11-19 05:08:49,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:50,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 05:08:50,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -90699574, now seen corresponding path program 5 times [2023-11-19 05:08:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198905342] [2023-11-19 05:08:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 2418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:53,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198905342] [2023-11-19 05:08:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198905342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198878535] [2023-11-19 05:08:53,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:08:53,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:53,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:53,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:53,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5643ed7-6018-4008-9957-7af72da7ac92/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:08:53,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-11-19 05:08:53,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:53,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-19 05:08:53,876 INFO L285 TraceCheckSpWp]: Computing forward predicates...