./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1df58a12292e53aa25870e709e17978d63a0e61d4dd56fb439981d66ecb6b925 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:15:49,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:15:49,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:15:49,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:15:49,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:15:49,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:15:49,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:15:49,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:15:49,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:15:49,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:15:49,203 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:15:49,204 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:15:49,204 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:15:49,206 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:15:49,207 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:15:49,207 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:15:49,208 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:15:49,208 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:15:49,208 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:15:49,209 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:15:49,211 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:15:49,211 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:15:49,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:15:49,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:15:49,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:15:49,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:15:49,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:15:49,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:15:49,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:15:49,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:15:49,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:15:49,217 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:15:49,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:15:49,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:15:49,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:15:49,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:15:49,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:15:49,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:15:49,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:49,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:15:49,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:15:49,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:15:49,220 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:15:49,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:15:49,221 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:15:49,221 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:15:49,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:15:49,222 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_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df58a12292e53aa25870e709e17978d63a0e61d4dd56fb439981d66ecb6b925 [2023-11-19 05:15:49,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:15:49,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:15:49,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:15:49,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:15:49,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:15:49,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_3.i [2023-11-19 05:15:52,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:15:53,041 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:15:53,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/sv-benchmarks/c/ldv-memsafety/memleaks_test18_3.i [2023-11-19 05:15:53,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/data/0d14b1c8b/4d1c24f0b60047dd837ae60941cb6a66/FLAG48f4c15e6 [2023-11-19 05:15:53,078 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/data/0d14b1c8b/4d1c24f0b60047dd837ae60941cb6a66 [2023-11-19 05:15:53,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:15:53,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:15:53,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:53,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:15:53,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:15:53,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea6443e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53, skipping insertion in model container [2023-11-19 05:15:53,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:53,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:53,635 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:15:53,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:53,781 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:53,787 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:15:53,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53 WrapperNode [2023-11-19 05:15:53,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:53,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:53,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:15:53,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:15:53,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,838 INFO L138 Inliner]: procedures = 164, calls = 70, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 31 [2023-11-19 05:15:53,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:53,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:15:53,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:15:53,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:15:53,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:15:53,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:15:53,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:15:53,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:15:53,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (1/1) ... [2023-11-19 05:15:53,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:53,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:53,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:15:53,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:15:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:15:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:15:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:15:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:15:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:15:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:15:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:15:53,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:15:54,110 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:15:54,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:15:54,235 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:15:54,309 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:15:54,310 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:15:54,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:54 BoogieIcfgContainer [2023-11-19 05:15:54,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:15:54,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:15:54,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:15:54,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:15:54,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:53" (1/3) ... [2023-11-19 05:15:54,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54344377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:54, skipping insertion in model container [2023-11-19 05:15:54,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:53" (2/3) ... [2023-11-19 05:15:54,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54344377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:54, skipping insertion in model container [2023-11-19 05:15:54,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:54" (3/3) ... [2023-11-19 05:15:54,333 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test18_3.i [2023-11-19 05:15:54,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:15:54,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:15:54,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:15:54,432 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;@1bea85af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:15:54,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:15:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:15:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:15:54,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:54,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:54,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:15:54,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1337089233, now seen corresponding path program 1 times [2023-11-19 05:15:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407427478] [2023-11-19 05:15:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:15:54,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:54,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407427478] [2023-11-19 05:15:54,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407427478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:54,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476636894] [2023-11-19 05:15:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:54,890 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:15:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:54,962 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-19 05:15:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:54,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-19 05:15:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:54,972 INFO L225 Difference]: With dead ends: 23 [2023-11-19 05:15:54,972 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 05:15:54,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:54,979 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:54,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:15:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 05:15:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-19 05:15:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-19 05:15:55,016 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2023-11-19 05:15:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:55,018 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-19 05:15:55,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:15:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-19 05:15:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:15:55,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:55,020 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:15:55,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:15:55,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1200797944, now seen corresponding path program 1 times [2023-11-19 05:15:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482186127] [2023-11-19 05:15:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:55,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482186127] [2023-11-19 05:15:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482186127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667656747] [2023-11-19 05:15:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:55,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:55,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:55,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:55,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:15:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:55,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:15:55,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:55,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:55,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667656747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:55,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:15:55,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 05:15:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550663115] [2023-11-19 05:15:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:55,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:15:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:15:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:15:55,623 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:55,684 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-11-19 05:15:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:15:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2023-11-19 05:15:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:55,686 INFO L225 Difference]: With dead ends: 18 [2023-11-19 05:15:55,686 INFO L226 Difference]: Without dead ends: 17 [2023-11-19 05:15:55,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:15:55,688 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:55,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:15:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-19 05:15:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-19 05:15:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-19 05:15:55,694 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 19 [2023-11-19 05:15:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:55,695 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-19 05:15:55,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-19 05:15:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:15:55,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:55,697 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:55,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:55,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:55,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:15:55,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1429969461, now seen corresponding path program 1 times [2023-11-19 05:15:55,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:55,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909521184] [2023-11-19 05:15:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:55,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:56,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909521184] [2023-11-19 05:15:56,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909521184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263884758] [2023-11-19 05:15:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:56,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:56,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:56,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:15:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:56,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:15:56,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:56,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:15:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263884758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:15:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1224524397] [2023-11-19 05:15:56,471 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:15:56,471 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:15:56,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:15:56,481 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:15:56,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:00,012 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 44 for LOIs [2023-11-19 05:16:00,037 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:16:01,324 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '316#(and (<= 1 |#StackHeapBarrier|) (= |~#ldv_global_msg_list~0.offset| 0) (<= 0 |ULTIMATE.start_entry_point_~i~0#1|) (= 10 |ULTIMATE.start_entry_point_~len~0#1|) (<= 2147483647 |ULTIMATE.start_entry_point_#t~post43#1|) (= |~#ldv_global_msg_list~0.base| 1))' at error location [2023-11-19 05:16:01,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:16:01,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:16:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 05:16:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143173520] [2023-11-19 05:16:01,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:16:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:16:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:16:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:16:01,327 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:16:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:01,492 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2023-11-19 05:16:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:16:01,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 20 [2023-11-19 05:16:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:01,494 INFO L225 Difference]: With dead ends: 33 [2023-11-19 05:16:01,494 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 05:16:01,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2023-11-19 05:16:01,496 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:01,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:16:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 05:16:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-19 05:16:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:16:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-11-19 05:16:01,510 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 20 [2023-11-19 05:16:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:01,511 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-11-19 05:16:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:16:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-11-19 05:16:01,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:16:01,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:01,517 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:01,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:01,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:01,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:16:01,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1799501132, now seen corresponding path program 2 times [2023-11-19 05:16:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699875600] [2023-11-19 05:16:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:16:02,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:02,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699875600] [2023-11-19 05:16:02,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699875600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:02,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434964111] [2023-11-19 05:16:02,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:16:02,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:02,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:16:02,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:16:02,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:16:02,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:02,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:16:02,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 05:16:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434964111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1076801329] [2023-11-19 05:16:02,444 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-19 05:16:02,445 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:02,445 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:02,446 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:02,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:04,878 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 44 for LOIs [2023-11-19 05:16:04,900 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:16:06,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '681#(and (<= 1 |#StackHeapBarrier|) (= |~#ldv_global_msg_list~0.offset| 0) (<= 0 |ULTIMATE.start_entry_point_~i~0#1|) (= 10 |ULTIMATE.start_entry_point_~len~0#1|) (<= 2147483647 |ULTIMATE.start_entry_point_#t~post43#1|) (= |~#ldv_global_msg_list~0.base| 1))' at error location [2023-11-19 05:16:06,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:16:06,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:16:06,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2023-11-19 05:16:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536932143] [2023-11-19 05:16:06,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:16:06,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 05:16:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 05:16:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:16:06,325 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-19 05:16:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:06,686 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2023-11-19 05:16:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:16:06,686 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 41 [2023-11-19 05:16:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:06,687 INFO L225 Difference]: With dead ends: 38 [2023-11-19 05:16:06,687 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:16:06,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 05:16:06,690 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:06,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:16:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:16:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:16:06,691 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) [2023-11-19 05:16:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:16:06,692 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2023-11-19 05:16:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:06,692 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:16:06,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-19 05:16:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:16:06,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:16:06,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:16:06,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:16:06,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:06,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:06,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:16:06,983 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 525 531) the Hoare annotation is: true [2023-11-19 05:16:06,984 INFO L899 garLoopResultBuilder]: For program point ldv_mallocEXIT(lines 525 531) no Hoare annotation was computed. [2023-11-19 05:16:06,984 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 766) no Hoare annotation was computed. [2023-11-19 05:16:06,984 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:16:06,984 INFO L899 garLoopResultBuilder]: For program point L766-3(line 766) no Hoare annotation was computed. [2023-11-19 05:16:06,984 INFO L895 garLoopResultBuilder]: At program point L762(line 762) the Hoare annotation is: (<= |ULTIMATE.start_entry_point_~len~0#1| 10) [2023-11-19 05:16:06,985 INFO L899 garLoopResultBuilder]: For program point L766-4(line 766) no Hoare annotation was computed. [2023-11-19 05:16:06,985 INFO L899 garLoopResultBuilder]: For program point L762-1(line 762) no Hoare annotation was computed. [2023-11-19 05:16:06,985 INFO L895 garLoopResultBuilder]: At program point L766-5(lines 766 769) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_entry_point_~len~0#1| 10))) (or (and (<= |ULTIMATE.start_entry_point_~i~0#1| 2147483646) .cse0 (<= 1 |ULTIMATE.start_entry_point_~i~0#1|)) (and .cse0 (= |ULTIMATE.start_entry_point_~i~0#1| 0)))) [2023-11-19 05:16:06,985 INFO L899 garLoopResultBuilder]: For program point L766-6(lines 760 771) no Hoare annotation was computed. [2023-11-19 05:16:06,985 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:16:06,986 INFO L895 garLoopResultBuilder]: At program point L767(line 767) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_entry_point_~len~0#1| 10))) (or (and .cse0 (<= 1 |ULTIMATE.start_entry_point_~i~0#1|) (<= |ULTIMATE.start_entry_point_~i~0#1| 9)) (and .cse0 (= |ULTIMATE.start_entry_point_~i~0#1| 0)))) [2023-11-19 05:16:06,986 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 766) no Hoare annotation was computed. [2023-11-19 05:16:06,986 INFO L899 garLoopResultBuilder]: For program point L767-1(line 767) no Hoare annotation was computed. [2023-11-19 05:16:06,986 INFO L899 garLoopResultBuilder]: For program point L765(line 765) no Hoare annotation was computed. [2023-11-19 05:16:06,989 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-19 05:16:06,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:16:07,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:16:07 BoogieIcfgContainer [2023-11-19 05:16:07,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:16:07,003 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:16:07,003 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:16:07,004 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:16:07,004 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:54" (3/4) ... [2023-11-19 05:16:07,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:16:07,009 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-11-19 05:16:07,013 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 05:16:07,013 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 05:16:07,013 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:16:07,096 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:16:07,098 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:16:07,098 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:16:07,099 INFO L158 Benchmark]: Toolchain (without parser) took 14015.01ms. Allocated memory was 205.5MB in the beginning and 482.3MB in the end (delta: 276.8MB). Free memory was 155.8MB in the beginning and 393.3MB in the end (delta: -237.5MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,099 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:16:07,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 699.81ms. Allocated memory is still 205.5MB. Free memory was 155.8MB in the beginning and 133.6MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.69ms. Allocated memory is still 205.5MB. Free memory was 133.6MB in the beginning and 131.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,100 INFO L158 Benchmark]: Boogie Preprocessor took 27.94ms. Allocated memory is still 205.5MB. Free memory was 131.7MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,100 INFO L158 Benchmark]: RCFGBuilder took 449.75ms. Allocated memory is still 205.5MB. Free memory was 130.1MB in the beginning and 117.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,101 INFO L158 Benchmark]: TraceAbstraction took 12682.17ms. Allocated memory was 205.5MB in the beginning and 482.3MB in the end (delta: 276.8MB). Free memory was 116.5MB in the beginning and 397.5MB in the end (delta: -281.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:16:07,102 INFO L158 Benchmark]: Witness Printer took 94.88ms. Allocated memory is still 482.3MB. Free memory was 397.5MB in the beginning and 393.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:16:07,105 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 699.81ms. Allocated memory is still 205.5MB. Free memory was 155.8MB in the beginning and 133.6MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.69ms. Allocated memory is still 205.5MB. Free memory was 133.6MB in the beginning and 131.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.94ms. Allocated memory is still 205.5MB. Free memory was 131.7MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.75ms. Allocated memory is still 205.5MB. Free memory was 130.1MB in the beginning and 117.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12682.17ms. Allocated memory was 205.5MB in the beginning and 482.3MB in the end (delta: 276.8MB). Free memory was 116.5MB in the beginning and 397.5MB in the end (delta: -281.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.88ms. Allocated memory is still 482.3MB. Free memory was 397.5MB in the beginning and 393.3MB 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: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: 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 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 30 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 160 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 21 NumberOfFragments, 40 HoareAnnotationTreeSize, 10 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 172 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 7 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 194/295 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 2 specifications checked. All of them hold - InvariantResult [Line: 766]: Loop Invariant Derived loop invariant: ((((i <= 2147483646) && (len <= 10)) && (1 <= i)) || ((len <= 10) && (i == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:16:07,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d869f620-7cbe-4e3c-9645-73e126e20feb/bin/utaipan-verify-t7M7D8N6sZ/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