./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2 --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 64bit --witnessprinter.graph.data.programhash d925f1aaa578011e84cee59af464c9f4e53ab5dc54b7f9269f34505d8383253a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:31:20,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:31:20,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 12:31:20,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:31:20,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:31:21,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:31:21,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:31:21,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:31:21,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:31:21,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:31:21,020 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:31:21,021 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:31:21,022 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:31:21,022 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:31:21,025 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:31:21,026 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:31:21,026 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:31:21,027 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:31:21,027 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:31:21,028 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:31:21,028 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:31:21,029 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:31:21,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:31:21,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:31:21,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:31:21,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:31:21,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:31:21,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:31:21,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:31:21,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:31:21,038 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:31:21,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:31:21,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:31:21,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:31:21,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:31:21,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:31:21,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:31:21,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:21,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:31:21,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:31:21,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:31:21,047 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:31:21,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:31:21,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:31:21,048 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:31:21,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:31:21,049 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_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d925f1aaa578011e84cee59af464c9f4e53ab5dc54b7f9269f34505d8383253a [2024-11-02 12:31:21,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:31:21,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:31:21,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:31:21,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:31:21,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:31:21,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c Unable to find full path for "g++" [2024-11-02 12:31:24,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:31:24,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:31:24,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c [2024-11-02 12:31:24,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/data/afc98359d/36d52e9e3efb480f851e2db2d1d23235/FLAG77e0e590e [2024-11-02 12:31:24,741 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/data/afc98359d/36d52e9e3efb480f851e2db2d1d23235 [2024-11-02 12:31:24,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:31:24,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:31:24,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:24,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:31:24,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:31:24,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:24" (1/1) ... [2024-11-02 12:31:24,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d29c6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:24, skipping insertion in model container [2024-11-02 12:31:24,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:24" (1/1) ... [2024-11-02 12:31:24,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:31:25,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:25,028 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:31:25,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:25,088 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:31:25,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25 WrapperNode [2024-11-02 12:31:25,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:25,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:25,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:31:25,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:31:25,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,134 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2024-11-02 12:31:25,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:25,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:31:25,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:31:25,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:31:25,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:31:25,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:31:25,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:31:25,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:31:25,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (1/1) ... [2024-11-02 12:31:25,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:25,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:25,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:31:25,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:31:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-11-02 12:31:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-11-02 12:31:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-11-02 12:31:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-11-02 12:31:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:31:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:31:25,347 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:31:25,350 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:31:25,640 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-02 12:31:25,641 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:31:25,670 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:31:25,671 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:31:25,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:25 BoogieIcfgContainer [2024-11-02 12:31:25,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:31:25,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:31:25,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:31:25,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:31:25,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:31:24" (1/3) ... [2024-11-02 12:31:25,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d692376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:25, skipping insertion in model container [2024-11-02 12:31:25,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:25" (2/3) ... [2024-11-02 12:31:25,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d692376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:25, skipping insertion in model container [2024-11-02 12:31:25,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:25" (3/3) ... [2024-11-02 12:31:25,683 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1a-2.c [2024-11-02 12:31:25,707 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:31:25,708 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-02 12:31:25,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:31:25,815 INFO L333 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, 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;@870d530, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:31:25,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-02 12:31:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:31:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:31:25,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:25,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:31:25,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:25,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1442097593, now seen corresponding path program 1 times [2024-11-02 12:31:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882589516] [2024-11-02 12:31:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:26,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882589516] [2024-11-02 12:31:26,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882589516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:26,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043876060] [2024-11-02 12:31:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:26,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:26,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:26,257 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:26,334 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-02 12:31:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 12:31:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:26,354 INFO L225 Difference]: With dead ends: 46 [2024-11-02 12:31:26,355 INFO L226 Difference]: Without dead ends: 42 [2024-11-02 12:31:26,360 INFO L431 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 [2024-11-02 12:31:26,367 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:26,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-02 12:31:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-02 12:31:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:31:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-02 12:31:26,448 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2024-11-02 12:31:26,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:26,449 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-02 12:31:26,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-02 12:31:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:31:26,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:26,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:26,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:31:26,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:26,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1755352361, now seen corresponding path program 1 times [2024-11-02 12:31:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706178112] [2024-11-02 12:31:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:26,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706178112] [2024-11-02 12:31:26,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706178112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:26,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:26,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:31:26,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740562185] [2024-11-02 12:31:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:26,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:26,607 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:26,750 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2024-11-02 12:31:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:31:26,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-02 12:31:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:26,753 INFO L225 Difference]: With dead ends: 59 [2024-11-02 12:31:26,753 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 12:31:26,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:26,756 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:26,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 152 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 12:31:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-02 12:31:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:31:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-02 12:31:26,775 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 7 [2024-11-02 12:31:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:26,775 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-02 12:31:26,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-02 12:31:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:31:26,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:26,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:26,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:31:26,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:26,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash 576061948, now seen corresponding path program 1 times [2024-11-02 12:31:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577538803] [2024-11-02 12:31:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:26,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577538803] [2024-11-02 12:31:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577538803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:26,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232192314] [2024-11-02 12:31:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:26,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:26,842 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:26,877 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-11-02 12:31:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:31:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:26,879 INFO L225 Difference]: With dead ends: 52 [2024-11-02 12:31:26,879 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:31:26,880 INFO L431 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 [2024-11-02 12:31:26,884 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:26,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 69 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:31:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-02 12:31:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:31:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-02 12:31:26,900 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 11 [2024-11-02 12:31:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:26,901 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-02 12:31:26,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-02 12:31:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:31:26,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:26,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:26,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:31:26,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:26,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 678051242, now seen corresponding path program 1 times [2024-11-02 12:31:26,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:26,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013364702] [2024-11-02 12:31:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:27,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:27,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013364702] [2024-11-02 12:31:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013364702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:27,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:27,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:31:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654173989] [2024-11-02 12:31:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:27,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:31:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:31:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:31:27,066 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:27,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:27,326 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2024-11-02 12:31:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:31:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-02 12:31:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:27,329 INFO L225 Difference]: With dead ends: 76 [2024-11-02 12:31:27,330 INFO L226 Difference]: Without dead ends: 75 [2024-11-02 12:31:27,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:27,333 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:27,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 182 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:31:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-02 12:31:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2024-11-02 12:31:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.372093023255814) internal successors, (59), 50 states have internal predecessors, (59), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-02 12:31:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2024-11-02 12:31:27,370 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 12 [2024-11-02 12:31:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:27,370 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2024-11-02 12:31:27,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2024-11-02 12:31:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:31:27,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:27,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:27,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:31:27,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:27,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1701183343, now seen corresponding path program 1 times [2024-11-02 12:31:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920126040] [2024-11-02 12:31:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:27,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920126040] [2024-11-02 12:31:27,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920126040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:27,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:27,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:31:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016533036] [2024-11-02 12:31:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:27,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:27,487 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:27,617 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2024-11-02 12:31:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-02 12:31:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:27,620 INFO L225 Difference]: With dead ends: 128 [2024-11-02 12:31:27,620 INFO L226 Difference]: Without dead ends: 71 [2024-11-02 12:31:27,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:27,624 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:27,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 98 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-02 12:31:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-02 12:31:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 52 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-02 12:31:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2024-11-02 12:31:27,645 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 18 [2024-11-02 12:31:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:27,645 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2024-11-02 12:31:27,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2024-11-02 12:31:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:31:27,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:27,648 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:27,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:31:27,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:27,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -719559311, now seen corresponding path program 1 times [2024-11-02 12:31:27,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824761953] [2024-11-02 12:31:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:27,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:27,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824761953] [2024-11-02 12:31:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824761953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:27,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10868775] [2024-11-02 12:31:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:27,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:27,728 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:27,786 INFO L93 Difference]: Finished difference Result 90 states and 122 transitions. [2024-11-02 12:31:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:27,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-02 12:31:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:27,790 INFO L225 Difference]: With dead ends: 90 [2024-11-02 12:31:27,790 INFO L226 Difference]: Without dead ends: 89 [2024-11-02 12:31:27,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:27,792 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:27,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-02 12:31:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2024-11-02 12:31:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 56 states have internal predecessors, (65), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-02 12:31:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2024-11-02 12:31:27,810 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 19 [2024-11-02 12:31:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:27,810 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2024-11-02 12:31:27,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2024-11-02 12:31:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:31:27,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:27,815 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:27,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:31:27,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:27,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash -831502117, now seen corresponding path program 1 times [2024-11-02 12:31:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:27,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43577147] [2024-11-02 12:31:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:27,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:27,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43577147] [2024-11-02 12:31:27,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43577147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:27,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:27,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893849677] [2024-11-02 12:31:27,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:27,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:27,894 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:27,916 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-02 12:31:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-02 12:31:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:27,920 INFO L225 Difference]: With dead ends: 73 [2024-11-02 12:31:27,920 INFO L226 Difference]: Without dead ends: 72 [2024-11-02 12:31:27,921 INFO L431 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 [2024-11-02 12:31:27,923 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:27,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-02 12:31:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-02 12:31:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 55 states have internal predecessors, (63), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-02 12:31:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2024-11-02 12:31:27,951 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 20 [2024-11-02 12:31:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:27,951 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2024-11-02 12:31:27,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2024-11-02 12:31:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:27,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:27,953 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:27,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:31:27,953 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:27,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 252324898, now seen corresponding path program 1 times [2024-11-02 12:31:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778565981] [2024-11-02 12:31:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:28,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778565981] [2024-11-02 12:31:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778565981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:31:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376826903] [2024-11-02 12:31:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:28,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:28,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:28,116 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:28,219 INFO L93 Difference]: Finished difference Result 156 states and 213 transitions. [2024-11-02 12:31:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:31:28,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-02 12:31:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:28,221 INFO L225 Difference]: With dead ends: 156 [2024-11-02 12:31:28,222 INFO L226 Difference]: Without dead ends: 92 [2024-11-02 12:31:28,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:28,225 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:28,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 179 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-02 12:31:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2024-11-02 12:31:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 62 states have internal predecessors, (68), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-02 12:31:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2024-11-02 12:31:28,242 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 25 [2024-11-02 12:31:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:28,243 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2024-11-02 12:31:28,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:31:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2024-11-02 12:31:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-02 12:31:28,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:28,245 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:28,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:31:28,245 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:28,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1845121388, now seen corresponding path program 1 times [2024-11-02 12:31:28,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334072521] [2024-11-02 12:31:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:28,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:31:28,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334072521] [2024-11-02 12:31:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334072521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:31:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191991543] [2024-11-02 12:31:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:28,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:28,345 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:31:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:28,427 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-11-02 12:31:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:31:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-02 12:31:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:28,431 INFO L225 Difference]: With dead ends: 168 [2024-11-02 12:31:28,432 INFO L226 Difference]: Without dead ends: 96 [2024-11-02 12:31:28,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:28,435 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:28,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 190 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-02 12:31:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2024-11-02 12:31:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 67 states have internal predecessors, (73), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-02 12:31:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2024-11-02 12:31:28,466 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 36 [2024-11-02 12:31:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:28,470 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2024-11-02 12:31:28,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:31:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2024-11-02 12:31:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 12:31:28,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:28,472 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:28,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:31:28,472 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:28,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash -660204944, now seen corresponding path program 1 times [2024-11-02 12:31:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:28,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157734909] [2024-11-02 12:31:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-02 12:31:28,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157734909] [2024-11-02 12:31:28,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157734909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:28,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:28,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017338752] [2024-11-02 12:31:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:28,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:28,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:28,564 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:28,590 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2024-11-02 12:31:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:28,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-02 12:31:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:28,592 INFO L225 Difference]: With dead ends: 88 [2024-11-02 12:31:28,593 INFO L226 Difference]: Without dead ends: 87 [2024-11-02 12:31:28,593 INFO L431 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 [2024-11-02 12:31:28,594 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:28,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-02 12:31:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-02 12:31:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 66 states have internal predecessors, (71), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-02 12:31:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-11-02 12:31:28,610 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 38 [2024-11-02 12:31:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:28,611 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-11-02 12:31:28,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-11-02 12:31:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:31:28,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:28,613 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:28,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:31:28,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1008483268, now seen corresponding path program 1 times [2024-11-02 12:31:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289089633] [2024-11-02 12:31:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-02 12:31:28,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289089633] [2024-11-02 12:31:28,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289089633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:28,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:28,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502905636] [2024-11-02 12:31:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:28,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:28,709 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:28,745 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2024-11-02 12:31:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-02 12:31:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:28,750 INFO L225 Difference]: With dead ends: 94 [2024-11-02 12:31:28,750 INFO L226 Difference]: Without dead ends: 93 [2024-11-02 12:31:28,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:28,755 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:28,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-02 12:31:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-02 12:31:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 70 states have internal predecessors, (77), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (20), 16 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-02 12:31:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2024-11-02 12:31:28,775 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 39 [2024-11-02 12:31:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:28,776 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2024-11-02 12:31:28,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2024-11-02 12:31:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-02 12:31:28,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:28,781 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:28,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:31:28,784 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:28,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 409606471, now seen corresponding path program 1 times [2024-11-02 12:31:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307888470] [2024-11-02 12:31:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-02 12:31:28,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307888470] [2024-11-02 12:31:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307888470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:28,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:28,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:31:28,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146568673] [2024-11-02 12:31:28,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:28,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:28,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:28,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:28,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:28,916 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:31:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:29,033 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-02 12:31:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:31:29,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-02 12:31:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:29,035 INFO L225 Difference]: With dead ends: 103 [2024-11-02 12:31:29,036 INFO L226 Difference]: Without dead ends: 102 [2024-11-02 12:31:29,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:31:29,037 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:29,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 207 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-02 12:31:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2024-11-02 12:31:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 69 states have internal predecessors, (75), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (20), 16 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-02 12:31:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2024-11-02 12:31:29,051 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 43 [2024-11-02 12:31:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:29,052 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2024-11-02 12:31:29,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:31:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2024-11-02 12:31:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:31:29,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:29,054 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:29,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:31:29,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:29,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1420295783, now seen corresponding path program 1 times [2024-11-02 12:31:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83513544] [2024-11-02 12:31:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 12:31:29,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83513544] [2024-11-02 12:31:29,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83513544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:29,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904117615] [2024-11-02 12:31:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:29,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:29,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:31:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:29,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:31:29,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 12:31:29,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 12:31:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904117615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2061938467] [2024-11-02 12:31:29,735 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-02 12:31:29,735 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:31:29,742 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:31:29,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:31:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-02 12:31:29,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113986610] [2024-11-02 12:31:29,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:31:29,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 12:31:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 12:31:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:31:29,752 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:31:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:30,193 INFO L93 Difference]: Finished difference Result 194 states and 253 transitions. [2024-11-02 12:31:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-02 12:31:30,194 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-02 12:31:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:30,196 INFO L225 Difference]: With dead ends: 194 [2024-11-02 12:31:30,196 INFO L226 Difference]: Without dead ends: 192 [2024-11-02 12:31:30,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-02 12:31:30,199 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 91 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:30,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 360 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:31:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-02 12:31:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 117. [2024-11-02 12:31:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 87 states have internal predecessors, (95), 20 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (34), 22 states have call predecessors, (34), 19 states have call successors, (34) [2024-11-02 12:31:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2024-11-02 12:31:30,232 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 42 [2024-11-02 12:31:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:30,232 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2024-11-02 12:31:30,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:31:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2024-11-02 12:31:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:31:30,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:30,238 INFO L215 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:30,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:31:30,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-02 12:31:30,439 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 653818833, now seen corresponding path program 1 times [2024-11-02 12:31:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397155946] [2024-11-02 12:31:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-02 12:31:30,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397155946] [2024-11-02 12:31:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397155946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318915244] [2024-11-02 12:31:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:30,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:30,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:30,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:31:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:30,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:31:30,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-02 12:31:30,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318915244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:30,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:31:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-02 12:31:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850801777] [2024-11-02 12:31:30,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:30,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:30,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:31:30,744 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:31:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:30,906 INFO L93 Difference]: Finished difference Result 151 states and 192 transitions. [2024-11-02 12:31:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:31:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2024-11-02 12:31:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:30,908 INFO L225 Difference]: With dead ends: 151 [2024-11-02 12:31:30,908 INFO L226 Difference]: Without dead ends: 150 [2024-11-02 12:31:30,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:31:30,909 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 28 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:30,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 178 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-02 12:31:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2024-11-02 12:31:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 107 states have internal predecessors, (117), 25 states have call successors, (25), 8 states have call predecessors, (25), 12 states have return successors, (41), 28 states have call predecessors, (41), 24 states have call successors, (41) [2024-11-02 12:31:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 183 transitions. [2024-11-02 12:31:30,933 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 183 transitions. Word has length 54 [2024-11-02 12:31:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:30,933 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 183 transitions. [2024-11-02 12:31:30,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:31:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 183 transitions. [2024-11-02 12:31:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 12:31:30,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:30,937 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:30,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:31:31,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-02 12:31:31,138 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:31,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash -895915619, now seen corresponding path program 1 times [2024-11-02 12:31:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:31,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057756039] [2024-11-02 12:31:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:31,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-02 12:31:31,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057756039] [2024-11-02 12:31:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057756039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:31,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861398000] [2024-11-02 12:31:31,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:31,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:31,205 INFO L87 Difference]: Start difference. First operand 144 states and 183 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:31:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:31,243 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2024-11-02 12:31:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:31,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2024-11-02 12:31:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:31,247 INFO L225 Difference]: With dead ends: 158 [2024-11-02 12:31:31,247 INFO L226 Difference]: Without dead ends: 157 [2024-11-02 12:31:31,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:31,249 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:31,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-02 12:31:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2024-11-02 12:31:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 114 states have internal predecessors, (125), 25 states have call successors, (25), 8 states have call predecessors, (25), 14 states have return successors, (47), 31 states have call predecessors, (47), 24 states have call successors, (47) [2024-11-02 12:31:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 197 transitions. [2024-11-02 12:31:31,279 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 197 transitions. Word has length 44 [2024-11-02 12:31:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:31,279 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 197 transitions. [2024-11-02 12:31:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:31:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 197 transitions. [2024-11-02 12:31:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:31:31,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:31,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:31,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 12:31:31,281 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:31,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2003580343, now seen corresponding path program 1 times [2024-11-02 12:31:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639337582] [2024-11-02 12:31:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-02 12:31:31,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639337582] [2024-11-02 12:31:31,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639337582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:31,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:31,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:31,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108281170] [2024-11-02 12:31:31,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:31,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:31,330 INFO L87 Difference]: Start difference. First operand 154 states and 197 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:31:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:31,353 INFO L93 Difference]: Finished difference Result 154 states and 197 transitions. [2024-11-02 12:31:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:31,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2024-11-02 12:31:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:31,357 INFO L225 Difference]: With dead ends: 154 [2024-11-02 12:31:31,357 INFO L226 Difference]: Without dead ends: 150 [2024-11-02 12:31:31,357 INFO L431 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 [2024-11-02 12:31:31,358 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:31,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:31:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-02 12:31:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-02 12:31:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 111 states have internal predecessors, (119), 25 states have call successors, (25), 8 states have call predecessors, (25), 14 states have return successors, (45), 30 states have call predecessors, (45), 24 states have call successors, (45) [2024-11-02 12:31:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 189 transitions. [2024-11-02 12:31:31,384 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 189 transitions. Word has length 45 [2024-11-02 12:31:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:31,384 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 189 transitions. [2024-11-02 12:31:31,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 12:31:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 189 transitions. [2024-11-02 12:31:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-02 12:31:31,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:31,388 INFO L215 NwaCegarLoop]: trace histogram [14, 12, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:31,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:31:31,389 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:31,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1440744689, now seen corresponding path program 1 times [2024-11-02 12:31:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313111200] [2024-11-02 12:31:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 95 proven. 93 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-02 12:31:31,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:31,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313111200] [2024-11-02 12:31:31,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313111200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262468242] [2024-11-02 12:31:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:31,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:31,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:31,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:31:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:31,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 12:31:31,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 246 proven. 35 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-02 12:31:31,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 95 proven. 93 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-02 12:31:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262468242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [488935792] [2024-11-02 12:31:32,310 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-02 12:31:32,311 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:31:32,311 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:31:32,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:31:32,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-11-02 12:31:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141247908] [2024-11-02 12:31:32,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:31:32,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:31:32,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:31:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:31:32,315 INFO L87 Difference]: Start difference. First operand 150 states and 189 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-02 12:31:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:32,767 INFO L93 Difference]: Finished difference Result 352 states and 457 transitions. [2024-11-02 12:31:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-02 12:31:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2024-11-02 12:31:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:32,770 INFO L225 Difference]: With dead ends: 352 [2024-11-02 12:31:32,770 INFO L226 Difference]: Without dead ends: 214 [2024-11-02 12:31:32,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-02 12:31:32,772 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 63 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:32,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 271 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:31:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-02 12:31:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2024-11-02 12:31:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 139 states have (on average 1.1079136690647482) internal successors, (154), 144 states have internal predecessors, (154), 33 states have call successors, (33), 10 states have call predecessors, (33), 19 states have return successors, (60), 40 states have call predecessors, (60), 32 states have call successors, (60) [2024-11-02 12:31:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2024-11-02 12:31:32,800 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 114 [2024-11-02 12:31:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:32,801 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2024-11-02 12:31:32,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-02 12:31:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2024-11-02 12:31:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-02 12:31:32,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:32,803 INFO L215 NwaCegarLoop]: trace histogram [11, 8, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:32,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:31:33,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-02 12:31:33,008 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:33,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2078772712, now seen corresponding path program 2 times [2024-11-02 12:31:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493614512] [2024-11-02 12:31:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 75 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-02 12:31:33,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493614512] [2024-11-02 12:31:33,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493614512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706183186] [2024-11-02 12:31:33,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:31:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:33,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:33,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:31:33,191 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-02 12:31:33,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:31:33,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:31:33,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-02 12:31:33,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706183186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:31:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-11-02 12:31:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22962288] [2024-11-02 12:31:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:33,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:31:33,249 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 5 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:33,355 INFO L93 Difference]: Finished difference Result 196 states and 247 transitions. [2024-11-02 12:31:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:31:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2024-11-02 12:31:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:33,358 INFO L225 Difference]: With dead ends: 196 [2024-11-02 12:31:33,358 INFO L226 Difference]: Without dead ends: 195 [2024-11-02 12:31:33,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:31:33,359 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 27 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:33,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 154 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-02 12:31:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-11-02 12:31:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.1007194244604317) internal successors, (153), 143 states have internal predecessors, (153), 33 states have call successors, (33), 10 states have call predecessors, (33), 19 states have return successors, (60), 40 states have call predecessors, (60), 32 states have call successors, (60) [2024-11-02 12:31:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 246 transitions. [2024-11-02 12:31:33,382 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 246 transitions. Word has length 84 [2024-11-02 12:31:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:33,383 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 246 transitions. [2024-11-02 12:31:33,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 12:31:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 246 transitions. [2024-11-02 12:31:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-02 12:31:33,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:33,385 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:33,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:31:33,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-02 12:31:33,586 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:33,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1224623314, now seen corresponding path program 1 times [2024-11-02 12:31:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888358046] [2024-11-02 12:31:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-02 12:31:33,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888358046] [2024-11-02 12:31:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888358046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:33,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:33,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:31:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044057516] [2024-11-02 12:31:33,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:33,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:31:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:31:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:33,721 INFO L87 Difference]: Start difference. First operand 194 states and 246 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:31:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:33,823 INFO L93 Difference]: Finished difference Result 194 states and 246 transitions. [2024-11-02 12:31:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:31:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2024-11-02 12:31:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:33,826 INFO L225 Difference]: With dead ends: 194 [2024-11-02 12:31:33,826 INFO L226 Difference]: Without dead ends: 133 [2024-11-02 12:31:33,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:33,827 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:33,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 168 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-02 12:31:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2024-11-02 12:31:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0804597701149425) internal successors, (94), 89 states have internal predecessors, (94), 19 states have call successors, (19), 7 states have call predecessors, (19), 11 states have return successors, (32), 22 states have call predecessors, (32), 16 states have call successors, (32) [2024-11-02 12:31:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2024-11-02 12:31:33,845 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 84 [2024-11-02 12:31:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:33,845 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2024-11-02 12:31:33,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:31:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2024-11-02 12:31:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-02 12:31:33,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:33,854 INFO L215 NwaCegarLoop]: trace histogram [46, 45, 31, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:33,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:31:33,854 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-02 12:31:33,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash -58945839, now seen corresponding path program 1 times [2024-11-02 12:31:33,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:33,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596779067] [2024-11-02 12:31:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:33,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 85 proven. 539 refuted. 0 times theorem prover too weak. 4686 trivial. 0 not checked. [2024-11-02 12:31:34,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596779067] [2024-11-02 12:31:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596779067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265485867] [2024-11-02 12:31:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:34,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:34,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:34,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:34,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:31:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:34,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:31:34,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 1679 proven. 28 refuted. 0 times theorem prover too weak. 3603 trivial. 0 not checked. [2024-11-02 12:31:34,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 85 proven. 539 refuted. 0 times theorem prover too weak. 4686 trivial. 0 not checked. [2024-11-02 12:31:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265485867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:31:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [866171808] [2024-11-02 12:31:35,546 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:31:35,546 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:31:35,546 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:31:35,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:31:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-02 12:31:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951091443] [2024-11-02 12:31:35,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:31:35,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:31:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:31:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:35,551 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-02 12:31:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:35,678 INFO L93 Difference]: Finished difference Result 176 states and 218 transitions. [2024-11-02 12:31:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:31:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 370 [2024-11-02 12:31:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:35,679 INFO L225 Difference]: With dead ends: 176 [2024-11-02 12:31:35,680 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:31:35,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 734 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:31:35,681 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:35,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 74 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:31:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:31:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:31:35,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 370 [2024-11-02 12:31:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:35,684 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:31:35,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-02 12:31:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:31:35,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:31:35,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-11-02 12:31:35,688 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-02 12:31:35,688 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-02 12:31:35,688 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-02 12:31:35,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-02 12:31:35,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-02 12:31:35,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-02 12:31:35,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-02 12:31:35,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-02 12:31:35,690 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-02 12:31:35,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:31:35,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:35,897 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:35,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:31:36,946 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:31:36,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:31:36 BoogieIcfgContainer [2024-11-02 12:31:36,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:31:36,982 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:31:36,982 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:31:36,982 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:31:36,983 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:25" (3/4) ... [2024-11-02 12:31:36,986 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:31:36,991 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2024-11-02 12:31:36,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2024-11-02 12:31:36,997 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-02 12:31:36,998 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-02 12:31:36,998 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-02 12:31:37,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:31:37,115 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:31:37,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:31:37,116 INFO L158 Benchmark]: Toolchain (without parser) took 12367.97ms. Allocated memory was 144.7MB in the beginning and 232.8MB in the end (delta: 88.1MB). Free memory was 107.6MB in the beginning and 188.9MB in the end (delta: -81.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,116 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 144.7MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:31:37,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.00ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 95.8MB in the end (delta: 11.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.68ms. Allocated memory is still 144.7MB. Free memory was 95.8MB in the beginning and 94.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:31:37,117 INFO L158 Benchmark]: Boogie Preprocessor took 36.82ms. Allocated memory is still 144.7MB. Free memory was 94.6MB in the beginning and 93.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,118 INFO L158 Benchmark]: RCFGBuilder took 498.61ms. Allocated memory is still 144.7MB. Free memory was 93.4MB in the beginning and 82.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,118 INFO L158 Benchmark]: TraceAbstraction took 11306.30ms. Allocated memory was 144.7MB in the beginning and 232.8MB in the end (delta: 88.1MB). Free memory was 81.2MB in the beginning and 193.1MB in the end (delta: -111.9MB). Peak memory consumption was 107.0MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,118 INFO L158 Benchmark]: Witness Printer took 133.27ms. Allocated memory is still 232.8MB. Free memory was 193.1MB in the beginning and 188.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:31:37,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 144.7MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.00ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 95.8MB in the end (delta: 11.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.68ms. Allocated memory is still 144.7MB. Free memory was 95.8MB in the beginning and 94.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.82ms. Allocated memory is still 144.7MB. Free memory was 94.6MB in the beginning and 93.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.61ms. Allocated memory is still 144.7MB. Free memory was 93.4MB in the beginning and 82.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11306.30ms. Allocated memory was 144.7MB in the beginning and 232.8MB in the end (delta: 88.1MB). Free memory was 81.2MB in the beginning and 193.1MB in the end (delta: -111.9MB). Peak memory consumption was 107.0MB. Max. memory is 16.1GB. * Witness Printer took 133.27ms. Allocated memory is still 232.8MB. Free memory was 193.1MB in the beginning and 188.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 20, TraceHistogramMax: 46, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 386 mSDsluCounter, 2909 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2129 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1130 IncrementalHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 780 mSDtfsCounter, 1130 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1325 GetRequests, 1185 SyntacticMatches, 14 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=17, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 186 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1775 NumberOfCodeBlocks, 1709 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2273 ConstructedInterpolants, 0 QuantifiedInterpolants, 3001 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1197 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 28 InterpolantComputations, 17 PerfectInterpolantSequences, 16724/18087 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - ProcedureContractResult [Line: 11]: Procedure Contract for rec1 Derived contract for procedure rec1. Requires: (i <= 2147483647) Ensures: ((((i < 1) || (\result == 1)) && (i <= 2147483647)) && ((\result == 0) || (0 < i))) - ProcedureContractResult [Line: 17]: Procedure Contract for rec2 Derived contract for procedure rec2. Requires: (j < 2147483647) Ensures: ((((j <= 0) && (0 <= \result)) || (1 < j)) && (j <= 2147483646)) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:31:37,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b33043-7850-4ecb-99d8-3231b3d3a917/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE