./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-008.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-008.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh --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 8f1a1519dc3ac954bb27ae35f40dd4ee3500f707e2df097fc14441b899353328 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:55:40,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:55:40,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 12:55:40,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:55:40,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:55:40,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:55:40,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:55:40,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:55:40,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:55:40,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:55:40,185 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:55:40,185 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:55:40,186 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:55:40,186 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:55:40,187 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:55:40,188 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:55:40,188 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:55:40,189 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:55:40,189 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:55:40,190 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:55:40,190 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:55:40,191 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:55:40,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:55:40,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:55:40,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:55:40,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:55:40,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:55:40,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:55:40,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:55:40,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:55:40,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:55:40,196 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:55:40,196 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:55:40,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:55:40,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:55:40,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:55:40,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:55:40,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:55:40,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:55:40,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:55:40,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:55:40,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:55:40,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:55:40,199 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:55:40,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:55:40,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:55:40,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:55:40,200 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:55:40,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:55:40,201 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_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f1a1519dc3ac954bb27ae35f40dd4ee3500f707e2df097fc14441b899353328 [2023-12-02 12:55:40,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:55:40,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:55:40,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:55:40,470 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:55:40,470 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:55:40,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/xcsp/AllInterval-008.c [2023-12-02 12:55:43,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:55:43,434 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:55:43,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/sv-benchmarks/c/xcsp/AllInterval-008.c [2023-12-02 12:55:43,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/data/bceecaff5/2efb8684d9514e87b35930177e68824d/FLAG261cfc65f [2023-12-02 12:55:43,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/data/bceecaff5/2efb8684d9514e87b35930177e68824d [2023-12-02 12:55:43,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:55:43,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:55:43,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:55:43,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:55:43,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:55:43,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38eb27e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43, skipping insertion in model container [2023-12-02 12:55:43,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,503 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:55:43,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:55:43,702 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:55:43,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:55:43,754 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:55:43,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43 WrapperNode [2023-12-02 12:55:43,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:55:43,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:55:43,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:55:43,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:55:43,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,805 INFO L138 Inliner]: procedures = 13, calls = 94, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 249 [2023-12-02 12:55:43,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:55:43,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:55:43,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:55:43,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:55:43,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:55:43,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:55:43,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:55:43,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:55:43,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (1/1) ... [2023-12-02 12:55:43,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:55:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:55:43,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:55:43,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:55:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:55:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:55:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:55:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:55:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2023-12-02 12:55:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2023-12-02 12:55:43,988 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:55:43,990 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:55:44,366 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:55:44,401 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:55:44,401 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:55:44,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:44 BoogieIcfgContainer [2023-12-02 12:55:44,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:55:44,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:55:44,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:55:44,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:55:44,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:55:43" (1/3) ... [2023-12-02 12:55:44,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf9812d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:44, skipping insertion in model container [2023-12-02 12:55:44,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:43" (2/3) ... [2023-12-02 12:55:44,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf9812d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:44, skipping insertion in model container [2023-12-02 12:55:44,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:44" (3/3) ... [2023-12-02 12:55:44,413 INFO L112 eAbstractionObserver]: Analyzing ICFG AllInterval-008.c [2023-12-02 12:55:44,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:55:44,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-12-02 12:55:44,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:55:44,509 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;@3cc25a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:55:44,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-12-02 12:55:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 89 states have internal predecessors, (96), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 12:55:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-02 12:55:44,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:44,538 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:55:44,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 12:55:44,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -367632481, now seen corresponding path program 1 times [2023-12-02 12:55:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:44,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097554910] [2023-12-02 12:55:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:55:45,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097554910] [2023-12-02 12:55:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097554910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:55:45,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60623034] [2023-12-02 12:55:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:55:45,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:55:45,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:55:45,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:55:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:45,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:55:45,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:55:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:55:46,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:55:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:55:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60623034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:55:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312829920] [2023-12-02 12:55:46,983 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2023-12-02 12:55:46,983 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:55:46,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:55:46,995 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:55:46,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:56:02,290 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 12:56:02,292 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:56:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [312829920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:56:50,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:56:50,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [4, 4, 4] total 104 [2023-12-02 12:56:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108867436] [2023-12-02 12:56:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:56:50,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-02 12:56:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:56:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-02 12:56:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5239, Invalid=5681, Unknown=0, NotChecked=0, Total=10920 [2023-12-02 12:56:51,025 INFO L87 Difference]: Start difference. First operand has 177 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 89 states have internal predecessors, (96), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 12:56:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:56:53,502 INFO L93 Difference]: Finished difference Result 177 states and 268 transitions. [2023-12-02 12:56:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-02 12:56:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 255 [2023-12-02 12:56:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:56:53,521 INFO L225 Difference]: With dead ends: 177 [2023-12-02 12:56:53,521 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 12:56:53,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 663 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=5239, Invalid=5681, Unknown=0, NotChecked=0, Total=10920 [2023-12-02 12:56:53,535 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 567 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:56:53,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 216 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 12:56:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 12:56:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 12:56:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 72 states have internal predecessors, (78), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 12:56:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 248 transitions. [2023-12-02 12:56:53,699 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 248 transitions. Word has length 255 [2023-12-02 12:56:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:56:53,703 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 248 transitions. [2023-12-02 12:56:53,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 12:56:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 248 transitions. [2023-12-02 12:56:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-02 12:56:53,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:56:53,713 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:56:53,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:56:53,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 12:56:53,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 12:56:53,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:56:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash 27493574, now seen corresponding path program 1 times [2023-12-02 12:56:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:56:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227365733] [2023-12-02 12:56:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:56:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:56:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2023-12-02 12:56:54,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:56:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227365733] [2023-12-02 12:56:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227365733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:56:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:56:54,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:56:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629216766] [2023-12-02 12:56:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:56:54,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:56:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:56:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:56:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:56:54,154 INFO L87 Difference]: Start difference. First operand 159 states and 248 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-02 12:56:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:56:54,348 INFO L93 Difference]: Finished difference Result 165 states and 254 transitions. [2023-12-02 12:56:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:56:54,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 258 [2023-12-02 12:56:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:56:54,355 INFO L225 Difference]: With dead ends: 165 [2023-12-02 12:56:54,356 INFO L226 Difference]: Without dead ends: 158 [2023-12-02 12:56:54,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:56:54,358 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 20 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:56:54,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 417 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:56:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-02 12:56:54,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2023-12-02 12:56:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 65 states have internal predecessors, (71), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 12:56:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 241 transitions. [2023-12-02 12:56:54,491 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 241 transitions. Word has length 258 [2023-12-02 12:56:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:56:54,493 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 241 transitions. [2023-12-02 12:56:54,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-02 12:56:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 241 transitions. [2023-12-02 12:56:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-02 12:56:54,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:56:54,501 INFO L195 NwaCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:56:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:56:54,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 12:56:54,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:56:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 852300934, now seen corresponding path program 1 times [2023-12-02 12:56:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:56:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648956572] [2023-12-02 12:56:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:56:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:56:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:56:54,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:56:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648956572] [2023-12-02 12:56:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648956572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:56:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838927222] [2023-12-02 12:56:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:56:54,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:56:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:56:55,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:56:55,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:56:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:55,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:56:55,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:56:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:56:55,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:56:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-12-02 12:56:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838927222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:56:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813463960] [2023-12-02 12:56:55,766 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2023-12-02 12:56:55,766 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:56:55,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:56:55,767 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:56:55,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:57:14,228 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 12:57:14,230 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:58:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [813463960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:58:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [5, 5, 5] total 105 [2023-12-02 12:58:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888557800] [2023-12-02 12:58:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:05,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-02 12:58:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-02 12:58:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5252, Invalid=5878, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 12:58:05,850 INFO L87 Difference]: Start difference. First operand 152 states and 241 transitions. Second operand has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 12:58:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:07,930 INFO L93 Difference]: Finished difference Result 153 states and 242 transitions. [2023-12-02 12:58:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-02 12:58:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 259 [2023-12-02 12:58:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:07,934 INFO L225 Difference]: With dead ends: 153 [2023-12-02 12:58:07,934 INFO L226 Difference]: Without dead ends: 152 [2023-12-02 12:58:07,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 672 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=5252, Invalid=5878, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 12:58:07,938 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 384 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:07,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 187 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 12:58:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-02 12:58:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2023-12-02 12:58:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 64 states have internal predecessors, (70), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 12:58:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 240 transitions. [2023-12-02 12:58:08,023 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 240 transitions. Word has length 259 [2023-12-02 12:58:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:08,024 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 240 transitions. [2023-12-02 12:58:08,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 12:58:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 240 transitions. [2023-12-02 12:58:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-02 12:58:08,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:08,029 INFO L195 NwaCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:58:08,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:58:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:08,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 12:58:08,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1228297755, now seen corresponding path program 1 times [2023-12-02 12:58:08,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454547977] [2023-12-02 12:58:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:08,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 6 proven. 150 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2023-12-02 12:58:08,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454547977] [2023-12-02 12:58:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454547977] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:58:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993612865] [2023-12-02 12:58:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:58:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:58:08,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:58:08,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:58:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:08,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:58:08,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:58:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2023-12-02 12:58:09,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:58:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 2 proven. 77 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2023-12-02 12:58:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993612865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:58:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1223046762] [2023-12-02 12:58:09,502 INFO L159 IcfgInterpreter]: Started Sifa with 109 locations of interest [2023-12-02 12:58:09,502 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:58:09,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:58:09,502 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:58:09,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:58:25,335 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 12:58:25,336 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:59:20,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1223046762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:20,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:59:20,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [5, 5, 5] total 111 [2023-12-02 12:59:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239886489] [2023-12-02 12:59:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:20,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-02 12:59:20,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:59:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-02 12:59:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5761, Invalid=6671, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 12:59:20,342 INFO L87 Difference]: Start difference. First operand 151 states and 240 transitions. Second operand has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 12:59:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:22,834 INFO L93 Difference]: Finished difference Result 161 states and 252 transitions. [2023-12-02 12:59:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-02 12:59:22,835 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 266 [2023-12-02 12:59:22,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:22,837 INFO L225 Difference]: With dead ends: 161 [2023-12-02 12:59:22,838 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 12:59:22,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 688 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 55.0s TimeCoverageRelationStatistics Valid=5761, Invalid=6671, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 12:59:22,841 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 210 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:22,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 177 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 12:59:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 12:59:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-12-02 12:59:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 70 states have internal predecessors, (77), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 12:59:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 249 transitions. [2023-12-02 12:59:22,914 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 249 transitions. Word has length 266 [2023-12-02 12:59:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:22,915 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 249 transitions. [2023-12-02 12:59:22,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 12:59:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 249 transitions. [2023-12-02 12:59:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-02 12:59:22,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:22,919 INFO L195 NwaCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:59:22,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:59:23,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:23,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 12:59:23,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1191554473, now seen corresponding path program 1 times [2023-12-02 12:59:23,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:23,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310719018] [2023-12-02 12:59:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:59:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 6 proven. 150 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2023-12-02 12:59:23,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:59:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310719018] [2023-12-02 12:59:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310719018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:59:23,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129507824] [2023-12-02 12:59:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:23,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:59:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:59:23,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:59:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:59:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:23,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:59:23,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:59:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2023-12-02 12:59:24,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:59:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 6241 trivial. 0 not checked. [2023-12-02 12:59:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129507824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:59:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1426849178] [2023-12-02 12:59:24,393 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2023-12-02 12:59:24,394 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:59:24,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:59:24,394 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:59:24,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:59:37,068 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 12:59:37,069 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:00:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1426849178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:00:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [5, 7, 7] total 119 [2023-12-02 13:00:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68829271] [2023-12-02 13:00:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-02 13:00:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-02 13:00:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6300, Invalid=7980, Unknown=0, NotChecked=0, Total=14280 [2023-12-02 13:00:35,369 INFO L87 Difference]: Start difference. First operand 158 states and 249 transitions. Second operand has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 13:00:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:39,023 INFO L93 Difference]: Finished difference Result 160 states and 251 transitions. [2023-12-02 13:00:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-02 13:00:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 268 [2023-12-02 13:00:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:39,026 INFO L225 Difference]: With dead ends: 160 [2023-12-02 13:00:39,026 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 13:00:39,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 687 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=6300, Invalid=7980, Unknown=0, NotChecked=0, Total=14280 [2023-12-02 13:00:39,029 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 186 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:39,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 188 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 13:00:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 13:00:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 150. [2023-12-02 13:00:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 63 states have internal predecessors, (69), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 13:00:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 239 transitions. [2023-12-02 13:00:39,095 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 239 transitions. Word has length 268 [2023-12-02 13:00:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:39,096 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 239 transitions. [2023-12-02 13:00:39,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 13:00:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 239 transitions. [2023-12-02 13:00:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-02 13:00:39,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:39,098 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:00:39,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:00:39,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:39,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:00:39,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -752661502, now seen corresponding path program 1 times [2023-12-02 13:00:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369008685] [2023-12-02 13:00:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 10 proven. 148 refuted. 0 times theorem prover too weak. 6322 trivial. 0 not checked. [2023-12-02 13:00:39,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369008685] [2023-12-02 13:00:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369008685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:00:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780117071] [2023-12-02 13:00:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:39,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:39,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:00:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:39,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:00:39,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:00:40,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:00:40,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780117071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:40,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896103280] [2023-12-02 13:00:40,364 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2023-12-02 13:00:40,364 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:40,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:40,365 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:40,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:53,487 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:00:53,488 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1896103280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:01:55,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [5, 5, 5] total 115 [2023-12-02 13:01:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126842816] [2023-12-02 13:01:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-02 13:01:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-02 13:01:55,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6170, Invalid=7170, Unknown=0, NotChecked=0, Total=13340 [2023-12-02 13:01:55,982 INFO L87 Difference]: Start difference. First operand 150 states and 239 transitions. Second operand has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:01:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:59,497 INFO L93 Difference]: Finished difference Result 168 states and 261 transitions. [2023-12-02 13:01:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-02 13:01:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 273 [2023-12-02 13:01:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:59,500 INFO L225 Difference]: With dead ends: 168 [2023-12-02 13:01:59,500 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 13:01:59,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 704 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 62.5s TimeCoverageRelationStatistics Valid=6170, Invalid=7170, Unknown=0, NotChecked=0, Total=13340 [2023-12-02 13:01:59,503 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 220 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:59,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 165 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 13:01:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 13:01:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2023-12-02 13:01:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 69 states have (on average 1.173913043478261) internal successors, (81), 73 states have internal predecessors, (81), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 13:01:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 255 transitions. [2023-12-02 13:01:59,571 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 255 transitions. Word has length 273 [2023-12-02 13:01:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:59,572 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 255 transitions. [2023-12-02 13:01:59,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:01:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 255 transitions. [2023-12-02 13:01:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-02 13:01:59,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:59,575 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:59,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:01:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 13:01:59,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:01:59,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:59,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1249575042, now seen corresponding path program 1 times [2023-12-02 13:01:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211565008] [2023-12-02 13:01:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:01:59,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:59,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211565008] [2023-12-02 13:01:59,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211565008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:59,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052000829] [2023-12-02 13:01:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:59,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:59,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:59,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:00,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:02:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:00,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:02:00,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:02:00,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:02:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052000829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:02:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1277898719] [2023-12-02 13:02:00,771 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2023-12-02 13:02:00,771 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:00,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:00,771 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:00,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:14,054 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:02:14,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:03:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1277898719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:19,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:03:19,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [5, 7, 7] total 121 [2023-12-02 13:03:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248969947] [2023-12-02 13:03:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2023-12-02 13:03:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2023-12-02 13:03:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6606, Invalid=8156, Unknown=0, NotChecked=0, Total=14762 [2023-12-02 13:03:19,228 INFO L87 Difference]: Start difference. First operand 162 states and 255 transitions. Second operand has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:03:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:23,142 INFO L93 Difference]: Finished difference Result 174 states and 269 transitions. [2023-12-02 13:03:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-02 13:03:23,143 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 275 [2023-12-02 13:03:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:23,145 INFO L225 Difference]: With dead ends: 174 [2023-12-02 13:03:23,145 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 13:03:23,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 703 SyntacticMatches, 5 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 65.2s TimeCoverageRelationStatistics Valid=6606, Invalid=8156, Unknown=0, NotChecked=0, Total=14762 [2023-12-02 13:03:23,146 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 219 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:23,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 168 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 13:03:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 13:03:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2023-12-02 13:03:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 13:03:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 257 transitions. [2023-12-02 13:03:23,213 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 257 transitions. Word has length 275 [2023-12-02 13:03:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:23,214 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 257 transitions. [2023-12-02 13:03:23,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:03:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 257 transitions. [2023-12-02 13:03:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-02 13:03:23,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:23,216 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:23,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:03:23,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 13:03:23,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:03:23,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1292741562, now seen corresponding path program 1 times [2023-12-02 13:03:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:23,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970074517] [2023-12-02 13:03:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 10 proven. 148 refuted. 0 times theorem prover too weak. 6322 trivial. 0 not checked. [2023-12-02 13:03:23,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970074517] [2023-12-02 13:03:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970074517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:03:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6951153] [2023-12-02 13:03:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:03:23,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:03:23,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:03:23,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:03:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:23,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:03:23,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:03:24,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:03:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6951153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:03:24,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031210909] [2023-12-02 13:03:24,331 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2023-12-02 13:03:24,331 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:03:24,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:03:24,332 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:03:24,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:03:37,671 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:03:37,672 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1031210909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:04:42,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [5, 5, 5] total 116 [2023-12-02 13:04:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107876411] [2023-12-02 13:04:42,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:42,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2023-12-02 13:04:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:42,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2023-12-02 13:04:42,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6273, Invalid=7299, Unknown=0, NotChecked=0, Total=13572 [2023-12-02 13:04:42,384 INFO L87 Difference]: Start difference. First operand 164 states and 257 transitions. Second operand has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:04:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:45,914 INFO L93 Difference]: Finished difference Result 174 states and 269 transitions. [2023-12-02 13:04:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-02 13:04:45,915 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 275 [2023-12-02 13:04:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:45,916 INFO L225 Difference]: With dead ends: 174 [2023-12-02 13:04:45,916 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 13:04:45,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 709 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=6273, Invalid=7299, Unknown=0, NotChecked=0, Total=13572 [2023-12-02 13:04:45,918 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 235 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:45,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 189 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 13:04:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 13:04:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2023-12-02 13:04:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 13:04:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 257 transitions. [2023-12-02 13:04:45,981 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 257 transitions. Word has length 275 [2023-12-02 13:04:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:45,982 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 257 transitions. [2023-12-02 13:04:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 30 states have internal predecessors, (33), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:04:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 257 transitions. [2023-12-02 13:04:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-02 13:04:45,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:45,984 INFO L195 NwaCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:45,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:04:46,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 13:04:46,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:04:46,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:46,185 INFO L85 PathProgramCache]: Analyzing trace with hash -575469886, now seen corresponding path program 1 times [2023-12-02 13:04:46,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:46,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560389694] [2023-12-02 13:04:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:46,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:04:46,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560389694] [2023-12-02 13:04:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560389694] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097044036] [2023-12-02 13:04:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:46,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:46,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:46,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:46,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:04:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:46,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:04:46,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:04:46,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2023-12-02 13:04:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097044036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:04:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892030380] [2023-12-02 13:04:47,233 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2023-12-02 13:04:47,233 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:47,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:47,234 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:47,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:02,335 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:05:02,336 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1892030380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:11,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:06:11,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [5, 9, 9] total 126 [2023-12-02 13:06:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448221902] [2023-12-02 13:06:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2023-12-02 13:06:11,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2023-12-02 13:06:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6943, Invalid=9059, Unknown=0, NotChecked=0, Total=16002 [2023-12-02 13:06:11,468 INFO L87 Difference]: Start difference. First operand 164 states and 257 transitions. Second operand has 111 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:06:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:15,254 INFO L93 Difference]: Finished difference Result 167 states and 260 transitions. [2023-12-02 13:06:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-02 13:06:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 277 [2023-12-02 13:06:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:15,257 INFO L225 Difference]: With dead ends: 167 [2023-12-02 13:06:15,257 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 13:06:15,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 704 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 69.2s TimeCoverageRelationStatistics Valid=6943, Invalid=9059, Unknown=0, NotChecked=0, Total=16002 [2023-12-02 13:06:15,259 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 333 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:15,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 179 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 13:06:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 13:06:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2023-12-02 13:06:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 59 states have (on average 1.152542372881356) internal successors, (68), 62 states have internal predecessors, (68), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 13:06:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 238 transitions. [2023-12-02 13:06:15,321 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 238 transitions. Word has length 277 [2023-12-02 13:06:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:15,322 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 238 transitions. [2023-12-02 13:06:15,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-02 13:06:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 238 transitions. [2023-12-02 13:06:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-02 13:06:15,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:15,324 INFO L195 NwaCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:15,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 13:06:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 13:06:15,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:06:15,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 433745239, now seen corresponding path program 1 times [2023-12-02 13:06:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:15,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878632370] [2023-12-02 13:06:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:06:15,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878632370] [2023-12-02 13:06:15,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878632370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747008621] [2023-12-02 13:06:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:15,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:15,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:06:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:15,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:06:15,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:06:16,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:06:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747008621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573730461] [2023-12-02 13:06:16,510 INFO L159 IcfgInterpreter]: Started Sifa with 119 locations of interest [2023-12-02 13:06:16,510 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:16,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:16,511 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:16,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:30,515 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:06:30,516 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1573730461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:07:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [5, 5, 5] total 117 [2023-12-02 13:07:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103792522] [2023-12-02 13:07:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-02 13:07:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-02 13:07:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6464, Invalid=7342, Unknown=0, NotChecked=0, Total=13806 [2023-12-02 13:07:42,451 INFO L87 Difference]: Start difference. First operand 149 states and 238 transitions. Second operand has 113 states, 29 states have (on average 1.206896551724138) internal successors, (35), 33 states have internal predecessors, (35), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 13:07:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:46,389 INFO L93 Difference]: Finished difference Result 175 states and 270 transitions. [2023-12-02 13:07:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-02 13:07:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 29 states have (on average 1.206896551724138) internal successors, (35), 33 states have internal predecessors, (35), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 280 [2023-12-02 13:07:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:46,392 INFO L225 Difference]: With dead ends: 175 [2023-12-02 13:07:46,392 INFO L226 Difference]: Without dead ends: 174 [2023-12-02 13:07:46,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 720 SyntacticMatches, 7 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 71.9s TimeCoverageRelationStatistics Valid=6464, Invalid=7342, Unknown=0, NotChecked=0, Total=13806 [2023-12-02 13:07:46,394 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 206 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:46,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 174 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 13:07:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-02 13:07:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2023-12-02 13:07:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 76 states have internal predecessors, (85), 88 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 13:07:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 261 transitions. [2023-12-02 13:07:46,466 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 261 transitions. Word has length 280 [2023-12-02 13:07:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:46,466 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 261 transitions. [2023-12-02 13:07:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 29 states have (on average 1.206896551724138) internal successors, (35), 33 states have internal predecessors, (35), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 13:07:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 261 transitions. [2023-12-02 13:07:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-02 13:07:46,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:46,468 INFO L195 NwaCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:46,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:07:46,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:46,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:07:46,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1694282899, now seen corresponding path program 1 times [2023-12-02 13:07:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058776876] [2023-12-02 13:07:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:07:46,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058776876] [2023-12-02 13:07:46,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058776876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254623608] [2023-12-02 13:07:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:46,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:46,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:46,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:46,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:07:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:47,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:07:47,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 4 proven. 77 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:07:47,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 4 proven. 77 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:07:47,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254623608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:07:47,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56213505] [2023-12-02 13:07:47,736 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2023-12-02 13:07:47,736 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:47,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:47,736 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:47,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:08:02,368 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:18,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [56213505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:18,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:09:18,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [5, 7, 7] total 126 [2023-12-02 13:09:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634486036] [2023-12-02 13:09:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-12-02 13:09:18,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-12-02 13:09:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7125, Invalid=8877, Unknown=0, NotChecked=0, Total=16002 [2023-12-02 13:09:18,302 INFO L87 Difference]: Start difference. First operand 166 states and 261 transitions. Second operand has 114 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 13:09:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:22,114 INFO L93 Difference]: Finished difference Result 181 states and 278 transitions. [2023-12-02 13:09:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-02 13:09:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 282 [2023-12-02 13:09:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:22,118 INFO L225 Difference]: With dead ends: 181 [2023-12-02 13:09:22,118 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 13:09:22,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 719 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 76.0s TimeCoverageRelationStatistics Valid=7125, Invalid=8877, Unknown=0, NotChecked=0, Total=16002 [2023-12-02 13:09:22,120 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 166 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:22,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 166 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 13:09:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 13:09:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2023-12-02 13:09:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 75 states have (on average 1.16) internal successors, (87), 78 states have internal predecessors, (87), 88 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 13:09:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 263 transitions. [2023-12-02 13:09:22,237 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 263 transitions. Word has length 282 [2023-12-02 13:09:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:22,238 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 263 transitions. [2023-12-02 13:09:22,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 13:09:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 263 transitions. [2023-12-02 13:09:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-02 13:09:22,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:22,241 INFO L195 NwaCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:22,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:09:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:22,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:09:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1144318373, now seen corresponding path program 1 times [2023-12-02 13:09:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85502410] [2023-12-02 13:09:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:09:22,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85502410] [2023-12-02 13:09:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85502410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740739039] [2023-12-02 13:09:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:22,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:22,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:22,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:22,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c82966c-8cd9-4854-830b-2a83bd9b6746/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:09:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:22,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:09:22,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:09:23,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 6561 trivial. 0 not checked. [2023-12-02 13:09:23,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740739039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:09:23,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779049825] [2023-12-02 13:09:23,453 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2023-12-02 13:09:23,453 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:09:23,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:09:23,453 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:09:23,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:37,598 INFO L197 IcfgInterpreter]: Interpreting procedure assume with input of size 3 for LOIs [2023-12-02 13:09:37,599 INFO L180 IcfgInterpreter]: Interpretation finished