./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:55:42,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:55:42,377 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 12:55:42,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:55:42,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:55:42,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:55:42,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:55:42,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:55:42,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:55:42,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:55:42,410 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:55:42,411 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:55:42,411 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:55:42,412 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:55:42,412 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:55:42,413 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:55:42,413 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:55:42,414 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:55:42,414 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:55:42,415 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:55:42,416 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:55:42,416 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:55:42,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:55:42,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:55:42,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:55:42,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:55:42,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:55:42,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:55:42,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:55:42,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:55:42,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:55:42,421 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:55:42,421 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:55:42,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:55:42,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:55:42,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:55:42,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:55:42,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:55:42,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:55:42,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:55:42,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:55:42,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:55:42,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:55:42,423 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:55:42,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:55:42,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:55:42,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:55:42,424 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:55:42,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:55:42,424 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_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d [2023-12-02 12:55:42,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:55:42,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:55:42,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:55:42,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:55:42,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:55:42,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2023-12-02 12:55:45,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:55:45,508 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:55:45,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2023-12-02 12:55:45,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/data/c786ed051/39594b17285049edb6fd1749aadedabd/FLAG4eb9e9332 [2023-12-02 12:55:45,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/data/c786ed051/39594b17285049edb6fd1749aadedabd [2023-12-02 12:55:45,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:55:45,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:55:45,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:55:45,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:55:45,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:55:45,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25be5953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45, skipping insertion in model container [2023-12-02 12:55:45,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:55:45,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:55:45,681 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:55:45,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:55:45,703 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:55:45,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45 WrapperNode [2023-12-02 12:55:45,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:55:45,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:55:45,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:55:45,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:55:45,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,736 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2023-12-02 12:55:45,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:55:45,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:55:45,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:55:45,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:55:45,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:55:45,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:55:45,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:55:45,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:55:45,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (1/1) ... [2023-12-02 12:55:45,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:55:45,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:55:45,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:55:45,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:55:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 12:55:45,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 12:55:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:55:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-12-02 12:55:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-12-02 12:55:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:55:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:55:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:55:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-12-02 12:55:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-12-02 12:55:45,878 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:55:45,881 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:55:45,975 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:55:45,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:55:45,994 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:55:45,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:45 BoogieIcfgContainer [2023-12-02 12:55:45,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:55:46,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:55:46,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:55:46,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:55:46,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:55:45" (1/3) ... [2023-12-02 12:55:46,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95dcf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:46, skipping insertion in model container [2023-12-02 12:55:46,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:45" (2/3) ... [2023-12-02 12:55:46,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95dcf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:46, skipping insertion in model container [2023-12-02 12:55:46,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:45" (3/3) ... [2023-12-02 12:55:46,007 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-1.c [2023-12-02 12:55:46,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:55:46,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 12:55:46,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:55:46,078 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53bed05d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:55:46,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 12:55:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:55:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:55:46,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:46,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:55:46,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:55:46,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:46,097 INFO L85 PathProgramCache]: Analyzing trace with hash 74181705, now seen corresponding path program 1 times [2023-12-02 12:55:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:46,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210094767] [2023-12-02 12:55:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:55:46,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:46,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210094767] [2023-12-02 12:55:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210094767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:55:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027127240] [2023-12-02 12:55:46,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:46,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:55:46,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:46,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:55:46,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:55:46,310 INFO L87 Difference]: Start difference. First operand has 28 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-02 12:55:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:46,345 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-12-02 12:55:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:55:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-12-02 12:55:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:46,354 INFO L225 Difference]: With dead ends: 37 [2023-12-02 12:55:46,355 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 12:55:46,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:55:46,361 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 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 [2023-12-02 12:55:46,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:55:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 12:55:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-02 12:55:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:55:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-02 12:55:46,394 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2023-12-02 12:55:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:46,394 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-12-02 12:55:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-02 12:55:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-02 12:55:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 12:55:46,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:46,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 12:55:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:55:46,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:55:46,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1995334401, now seen corresponding path program 1 times [2023-12-02 12:55:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706885711] [2023-12-02 12:55:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:55:46,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706885711] [2023-12-02 12:55:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706885711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:46,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:55:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288377231] [2023-12-02 12:55:46,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:46,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:55:46,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:55:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:55:46,468 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-12-02 12:55:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:46,524 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2023-12-02 12:55:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:55:46,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 [2023-12-02 12:55:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:46,526 INFO L225 Difference]: With dead ends: 21 [2023-12-02 12:55:46,526 INFO L226 Difference]: Without dead ends: 20 [2023-12-02 12:55:46,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:55:46,528 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:46,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:55:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-02 12:55:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-12-02 12:55:46,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:55:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-12-02 12:55:46,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2023-12-02 12:55:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:46,535 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-12-02 12:55:46,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-12-02 12:55:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-12-02 12:55:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 12:55:46,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:46,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:55:46,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:55:46,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:55:46,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1024215155, now seen corresponding path program 1 times [2023-12-02 12:55:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737751792] [2023-12-02 12:55:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:46,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:55:46,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737751792] [2023-12-02 12:55:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737751792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:46,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:46,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:55:46,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179746419] [2023-12-02 12:55:46,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:46,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:55:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:55:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:55:46,605 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 12:55:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:46,616 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-12-02 12:55:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:55:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10 [2023-12-02 12:55:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:46,617 INFO L225 Difference]: With dead ends: 19 [2023-12-02 12:55:46,618 INFO L226 Difference]: Without dead ends: 18 [2023-12-02 12:55:46,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:55:46,619 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:46,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:55:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-02 12:55:46,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-02 12:55:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:55:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2023-12-02 12:55:46,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2023-12-02 12:55:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:46,625 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2023-12-02 12:55:46,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 12:55:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2023-12-02 12:55:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 12:55:46,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:46,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:55:46,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:55:46,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 12:55:46,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1685898794, now seen corresponding path program 1 times [2023-12-02 12:55:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:46,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024217337] [2023-12-02 12:55:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:55:46,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024217337] [2023-12-02 12:55:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024217337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 12:55:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716473542] [2023-12-02 12:55:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:46,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 12:55:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 12:55:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:55:46,753 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2023-12-02 12:55:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:46,839 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-12-02 12:55:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 12:55:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 11 [2023-12-02 12:55:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:46,840 INFO L225 Difference]: With dead ends: 18 [2023-12-02 12:55:46,840 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 12:55:46,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-02 12:55:46,842 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:46,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:55:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 12:55:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 12:55:46,844 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) [2023-12-02 12:55:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 12:55:46,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-12-02 12:55:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:46,845 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 12:55:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2023-12-02 12:55:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 12:55:46,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 12:55:46,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-12-02 12:55:46,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-12-02 12:55:46,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-12-02 12:55:46,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-12-02 12:55:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:55:46,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 12:55:46,886 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-12-02 12:55:46,886 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 3) the Hoare annotation is: true [2023-12-02 12:55:46,886 INFO L899 garLoopResultBuilder]: For program point fFINAL(lines 8 13) no Hoare annotation was computed. [2023-12-02 12:55:46,886 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-12-02 12:55:46,886 INFO L895 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (or (< 4 |f_#in~n|) (<= f_~n 3)) [2023-12-02 12:55:46,887 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-12-02 12:55:46,887 INFO L902 garLoopResultBuilder]: At program point L11-1(lines 8 13) the Hoare annotation is: true [2023-12-02 12:55:46,887 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 13) the Hoare annotation is: true [2023-12-02 12:55:46,887 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-12-02 12:55:46,887 INFO L899 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2023-12-02 12:55:46,887 INFO L899 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-12-02 12:55:46,887 INFO L899 garLoopResultBuilder]: For program point fEXIT(lines 8 13) no Hoare annotation was computed. [2023-12-02 12:55:46,888 INFO L899 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2023-12-02 12:55:46,888 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 12:55:46,888 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 12:55:46,888 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-12-02 12:55:46,888 INFO L899 garLoopResultBuilder]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2023-12-02 12:55:46,888 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-02 12:55:46,889 INFO L895 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (or (< 3 |f2_#in~n|) (<= f2_~n 3)) [2023-12-02 12:55:46,889 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-12-02 12:55:46,889 INFO L902 garLoopResultBuilder]: At program point L18-1(lines 15 20) the Hoare annotation is: true [2023-12-02 12:55:46,889 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-12-02 12:55:46,889 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2023-12-02 12:55:46,890 INFO L899 garLoopResultBuilder]: For program point f2EXIT(lines 15 20) no Hoare annotation was computed. [2023-12-02 12:55:46,890 INFO L899 garLoopResultBuilder]: For program point f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2023-12-02 12:55:46,890 INFO L899 garLoopResultBuilder]: For program point f2FINAL(lines 15 20) no Hoare annotation was computed. [2023-12-02 12:55:46,890 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2023-12-02 12:55:46,890 INFO L899 garLoopResultBuilder]: For program point f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2023-12-02 12:55:46,894 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-02 12:55:46,896 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:55:46,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:55:46 BoogieIcfgContainer [2023-12-02 12:55:46,901 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:55:46,902 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:55:46,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:55:46,902 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:55:46,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:45" (3/4) ... [2023-12-02 12:55:46,905 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 12:55:46,908 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2023-12-02 12:55:46,908 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2023-12-02 12:55:46,909 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2023-12-02 12:55:46,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-02 12:55:46,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 12:55:46,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 12:55:46,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 12:55:46,985 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:55:46,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 12:55:46,986 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:55:46,987 INFO L158 Benchmark]: Toolchain (without parser) took 1456.19ms. Allocated memory is still 153.1MB. Free memory was 118.0MB in the beginning and 99.7MB in the end (delta: 18.3MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-12-02 12:55:46,987 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:55:46,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.27ms. Allocated memory is still 153.1MB. Free memory was 118.0MB in the beginning and 108.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 12:55:46,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.83ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:55:46,988 INFO L158 Benchmark]: Boogie Preprocessor took 17.62ms. Allocated memory is still 153.1MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:55:46,989 INFO L158 Benchmark]: RCFGBuilder took 242.73ms. Allocated memory is still 153.1MB. Free memory was 106.0MB in the beginning and 96.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 12:55:46,989 INFO L158 Benchmark]: TraceAbstraction took 900.71ms. Allocated memory is still 153.1MB. Free memory was 95.0MB in the beginning and 103.9MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:55:46,990 INFO L158 Benchmark]: Witness Printer took 84.18ms. Allocated memory is still 153.1MB. Free memory was 103.9MB in the beginning and 99.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 12:55:46,992 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.27ms. Allocated memory is still 153.1MB. Free memory was 118.0MB in the beginning and 108.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.83ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.62ms. Allocated memory is still 153.1MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.73ms. Allocated memory is still 153.1MB. Free memory was 106.0MB in the beginning and 96.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 900.71ms. Allocated memory is still 153.1MB. Free memory was 95.0MB in the beginning and 103.9MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 84.18ms. Allocated memory is still 153.1MB. Free memory was 103.9MB in the beginning and 99.7MB 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: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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 4 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 43 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 17 NumberOfFragments, 20 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 12:55:47,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86afb44-2231-475e-a633-df3dc4509626/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE