./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum03-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/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_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum03-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7be15075ce01a2506fca5f00f42200a3ccb6fbddb1902e9169c6afecb0edfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:10:27,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:10:27,150 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:10:27,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:10:27,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:10:27,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:10:27,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:10:27,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:10:27,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:10:27,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:10:27,210 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:10:27,210 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:10:27,211 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:10:27,213 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:10:27,214 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:10:27,215 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:10:27,215 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:10:27,216 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:10:27,216 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:10:27,217 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:10:27,217 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:10:27,218 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:10:27,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:10:27,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:10:27,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:10:27,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:10:27,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:10:27,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:10:27,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:10:27,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:10:27,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:10:27,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:10:27,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:10:27,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:10:27,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:10:27,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:10:27,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:27,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:10:27,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:10:27,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:10:27,228 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:10:27,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:10:27,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:10:27,229 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:10:27,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:10:27,230 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_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7be15075ce01a2506fca5f00f42200a3ccb6fbddb1902e9169c6afecb0edfe [2023-11-19 04:10:27,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:10:27,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:10:27,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:10:27,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:10:27,569 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:10:27,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loops/sum03-1.i [2023-11-19 04:10:31,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:10:31,230 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:10:31,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/sv-benchmarks/c/loops/sum03-1.i [2023-11-19 04:10:31,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/data/269bba564/5030470f3ec449d7a6bb90f4c1f2bfd6/FLAG06251a9a4 [2023-11-19 04:10:31,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/data/269bba564/5030470f3ec449d7a6bb90f4c1f2bfd6 [2023-11-19 04:10:31,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:10:31,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:10:31,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:31,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:10:31,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:10:31,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4a06b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31, skipping insertion in model container [2023-11-19 04:10:31,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:31,491 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/sv-benchmarks/c/loops/sum03-1.i[807,820] [2023-11-19 04:10:31,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:31,517 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:10:31,530 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/sv-benchmarks/c/loops/sum03-1.i[807,820] [2023-11-19 04:10:31,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:31,552 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:10:31,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31 WrapperNode [2023-11-19 04:10:31,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:31,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:31,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:10:31,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:10:31,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,585 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-11-19 04:10:31,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:31,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:10:31,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:10:31,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:10:31,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:10:31,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:10:31,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:10:31,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:10:31,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (1/1) ... [2023-11-19 04:10:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:31,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:31,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:10:31,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:10:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:10:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:10:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:10:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:10:31,791 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:10:31,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:10:31,936 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:10:31,994 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:10:31,995 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:10:32,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:32 BoogieIcfgContainer [2023-11-19 04:10:32,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:10:32,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:10:32,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:10:32,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:10:32,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:10:31" (1/3) ... [2023-11-19 04:10:32,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d449070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:32, skipping insertion in model container [2023-11-19 04:10:32,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:31" (2/3) ... [2023-11-19 04:10:32,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d449070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:32, skipping insertion in model container [2023-11-19 04:10:32,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:32" (3/3) ... [2023-11-19 04:10:32,014 INFO L112 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2023-11-19 04:10:32,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:10:32,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:10:32,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:10:32,104 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;@79b7bc77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:10:32,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:10:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:10:32,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:32,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:10:32,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:32,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2006281, now seen corresponding path program 1 times [2023-11-19 04:10:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306355889] [2023-11-19 04:10:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:32,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306355889] [2023-11-19 04:10:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306355889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:32,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:32,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:10:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282135218] [2023-11-19 04:10:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:10:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:10:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:10:32,842 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:32,894 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2023-11-19 04:10:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:10:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:10:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:32,907 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:10:32,907 INFO L226 Difference]: Without dead ends: 8 [2023-11-19 04:10:32,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:10:32,917 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:32,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:10:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-19 04:10:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-19 04:10:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-19 04:10:32,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-19 04:10:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:32,958 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-19 04:10:32,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:10:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-19 04:10:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:10:32,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:32,960 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 04:10:32,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:10:32,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:32,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash -355588447, now seen corresponding path program 1 times [2023-11-19 04:10:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623326836] [2023-11-19 04:10:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:33,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623326836] [2023-11-19 04:10:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623326836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:33,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522802187] [2023-11-19 04:10:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:33,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:33,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:33,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:10:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:33,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:10:33,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:33,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:10:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522802187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:10:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [848564822] [2023-11-19 04:10:34,909 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:10:34,909 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:10:34,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:10:34,921 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:10:34,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:10:35,335 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:10:35,497 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '86#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2023-11-19 04:10:35,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:10:35,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:10:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-19 04:10:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249746430] [2023-11-19 04:10:35,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:10:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:10:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:10:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:10:35,505 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 04:10:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:38,003 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-19 04:10:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:10:38,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:10:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:38,005 INFO L225 Difference]: With dead ends: 20 [2023-11-19 04:10:38,005 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 04:10:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:10:38,011 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:38,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:10:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 04:10:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-11-19 04:10:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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 04:10:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-19 04:10:38,024 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2023-11-19 04:10:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:38,025 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-19 04:10:38,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 04:10:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-19 04:10:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:10:38,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:38,028 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2023-11-19 04:10:38,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:38,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:38,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 427347721, now seen corresponding path program 2 times [2023-11-19 04:10:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:38,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993839268] [2023-11-19 04:10:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:38,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993839268] [2023-11-19 04:10:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993839268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970903388] [2023-11-19 04:10:38,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:10:38,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:38,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:38,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:10:39,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 04:10:39,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:10:39,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 04:10:39,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:39,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:10:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970903388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:10:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910712941] [2023-11-19 04:10:43,901 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:10:43,901 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:10:43,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:10:43,902 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:10:43,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:10:44,148 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:10:44,412 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '254#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2023-11-19 04:10:44,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:10:44,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:10:44,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2023-11-19 04:10:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151267480] [2023-11-19 04:10:44,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:10:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 04:10:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 04:10:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:10:44,416 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 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 04:10:50,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:11:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:06,825 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-19 04:11:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 04:11:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 04:11:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:06,831 INFO L225 Difference]: With dead ends: 38 [2023-11-19 04:11:06,831 INFO L226 Difference]: Without dead ends: 36 [2023-11-19 04:11:06,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 04:11:06,838 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:06,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-11-19 04:11:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-19 04:11:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-11-19 04:11:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 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 04:11:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2023-11-19 04:11:06,866 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2023-11-19 04:11:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:06,870 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2023-11-19 04:11:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 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 04:11:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2023-11-19 04:11:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 04:11:06,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:06,873 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2023-11-19 04:11:06,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:07,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:07,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:07,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 799635977, now seen corresponding path program 3 times [2023-11-19 04:11:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007189179] [2023-11-19 04:11:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:11:07,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:11:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:11:07,309 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:11:07,311 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:11:07,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:11:07,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:11:07,319 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-19 04:11:07,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:11:07,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:11:07 BoogieIcfgContainer [2023-11-19 04:11:07,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:11:07,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:11:07,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:11:07,374 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:11:07,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:32" (3/4) ... [2023-11-19 04:11:07,376 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:11:07,451 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:11:07,451 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:11:07,452 INFO L158 Benchmark]: Toolchain (without parser) took 36189.75ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 89.5MB in the beginning and 45.3MB in the end (delta: 44.2MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,452 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 127.9MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:11:07,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.85ms. Allocated memory is still 127.9MB. Free memory was 89.5MB in the beginning and 79.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.88ms. Allocated memory is still 127.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:11:07,454 INFO L158 Benchmark]: Boogie Preprocessor took 23.60ms. Allocated memory is still 127.9MB. Free memory was 77.8MB in the beginning and 76.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,454 INFO L158 Benchmark]: RCFGBuilder took 390.37ms. Allocated memory is still 127.9MB. Free memory was 76.5MB in the beginning and 66.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,455 INFO L158 Benchmark]: TraceAbstraction took 35367.88ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 65.2MB in the beginning and 48.5MB in the end (delta: 16.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,455 INFO L158 Benchmark]: Witness Printer took 78.29ms. Allocated memory is still 157.3MB. Free memory was 48.5MB in the beginning and 45.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:11:07,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 127.9MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.85ms. Allocated memory is still 127.9MB. Free memory was 89.5MB in the beginning and 79.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.88ms. Allocated memory is still 127.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.60ms. Allocated memory is still 127.9MB. Free memory was 77.8MB in the beginning and 76.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.37ms. Allocated memory is still 127.9MB. Free memory was 76.5MB in the beginning and 66.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 35367.88ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 65.2MB in the beginning and 48.5MB in the end (delta: 16.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 78.29ms. Allocated memory is still 157.3MB. Free memory was 48.5MB in the beginning and 45.3MB in the end (delta: 3.1MB). 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [sn=0, x=0] [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND FALSE !(x<10) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.2s, OverallIterations: 4, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 12 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, InterpolantAutomatonStates: 39, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 1205 SizeOfPredicates, 10 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/84 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-19 04:11:07,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9cf9c5-6fea-49cf-9fbe-28c1b678d5f8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE