./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5993f8ca278f17db67b0d89d60473315dd1639b7ed95b3e55f223aad0ab4864f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:20:08,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:20:08,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:20:08,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:20:08,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:20:08,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:20:08,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:20:08,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:20:08,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:20:08,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:20:08,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:20:08,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:20:08,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:20:08,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:20:08,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:20:08,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:20:08,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:20:08,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:20:08,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:20:08,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:20:08,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:20:08,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:20:08,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:20:08,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:20:08,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:20:08,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:20:08,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:20:08,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:20:08,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:20:08,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:20:08,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:20:08,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:20:08,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:20:08,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:20:08,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:20:08,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:20:08,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:20:08,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:20:08,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:20:08,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:20:08,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:20:08,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:20:08,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:20:08,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:20:08,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:20:08,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:20:08,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:20:08,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:20:08,249 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:20:08,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:20:08,249 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:20:08,260 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:20:08,260 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:20:08,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:20:08,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:20:08,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:20:08,261 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:20:08,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:20:08,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:20:08,262 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:20:08,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:20:08,263 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:20:08,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:20:08,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:20:08,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:20:08,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:20:08,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:20:08,264 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:20:08,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:20:08,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:20:08,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:20:08,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:20:08,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:20:08,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:08,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:20:08,267 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:20:08,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:20:08,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:20:08,268 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:20:08,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:20:08,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:20:08,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:20:08,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5993f8ca278f17db67b0d89d60473315dd1639b7ed95b3e55f223aad0ab4864f [2022-11-23 15:20:08,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:20:08,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:20:08,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:20:08,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:20:08,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:20:08,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i [2022-11-23 15:20:11,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:20:11,977 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:20:11,978 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/sv-benchmarks/c/termination-memory-alloca/a.10-alloca.i [2022-11-23 15:20:11,994 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/data/b236709a8/08d2f7f9d55a4391ab553c38933108fb/FLAG28be5f8f6 [2022-11-23 15:20:12,014 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/data/b236709a8/08d2f7f9d55a4391ab553c38933108fb [2022-11-23 15:20:12,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:20:12,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:20:12,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:12,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:20:12,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:20:12,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40961b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12, skipping insertion in model container [2022-11-23 15:20:12,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:20:12,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:20:12,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:12,363 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:20:12,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:12,472 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:20:12,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12 WrapperNode [2022-11-23 15:20:12,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:12,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:12,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:20:12,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:20:12,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,521 INFO L138 Inliner]: procedures = 111, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-11-23 15:20:12,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:12,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:20:12,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:20:12,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:20:12,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:20:12,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:20:12,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:20:12,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:20:12,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (1/1) ... [2022-11-23 15:20:12,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:12,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:20:12,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:20:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:20:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:20:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:20:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:20:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:20:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:20:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:20:12,768 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:20:12,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:20:12,975 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:20:13,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:20:13,012 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:20:13,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:13 BoogieIcfgContainer [2022-11-23 15:20:13,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:20:13,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:20:13,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:20:13,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:20:13,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:12" (1/3) ... [2022-11-23 15:20:13,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26032919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:13, skipping insertion in model container [2022-11-23 15:20:13,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:12" (2/3) ... [2022-11-23 15:20:13,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26032919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:13, skipping insertion in model container [2022-11-23 15:20:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:13" (3/3) ... [2022-11-23 15:20:13,050 INFO L112 eAbstractionObserver]: Analyzing ICFG a.10-alloca.i [2022-11-23 15:20:13,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:20:13,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 15:20:13,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:20:13,175 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=LoopsAndPotentialCycles, 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;@3185130d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:20:13,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 15:20:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-11-23 15:20:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:20:13,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:13,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:20:13,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:20:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 63943691, now seen corresponding path program 1 times [2022-11-23 15:20:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178056452] [2022-11-23 15:20:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:14,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:14,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178056452] [2022-11-23 15:20:14,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178056452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:14,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:14,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:20:14,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814529830] [2022-11-23 15:20:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:14,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:20:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:20:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:20:14,500 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-23 15:20:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:14,644 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-23 15:20:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:14,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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 5 [2022-11-23 15:20:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:14,656 INFO L225 Difference]: With dead ends: 17 [2022-11-23 15:20:14,657 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 15:20:14,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:20:14,664 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:14,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:20:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 15:20:14,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-11-23 15:20:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-23 15:20:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-23 15:20:14,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-23 15:20:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:14,711 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-23 15:20:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-23 15:20:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-23 15:20:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:20:14,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:14,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:20:14,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:20:14,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:20:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash 63943499, now seen corresponding path program 1 times [2022-11-23 15:20:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:14,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24747274] [2022-11-23 15:20:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:15,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:15,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24747274] [2022-11-23 15:20:15,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24747274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:15,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:15,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550874999] [2022-11-23 15:20:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:15,014 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-23 15:20:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:15,105 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-23 15:20:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-23 15:20:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:15,107 INFO L225 Difference]: With dead ends: 21 [2022-11-23 15:20:15,107 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 15:20:15,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:20:15,114 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:20:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 15:20:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-23 15:20:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 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) [2022-11-23 15:20:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-23 15:20:15,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2022-11-23 15:20:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:15,133 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-23 15:20:15,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-23 15:20:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-23 15:20:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:20:15,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:15,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:20:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:20:15,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:20:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1982254476, now seen corresponding path program 1 times [2022-11-23 15:20:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:15,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456141214] [2022-11-23 15:20:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:15,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456141214] [2022-11-23 15:20:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456141214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:15,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:15,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:20:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639875242] [2022-11-23 15:20:15,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:15,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:20:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:20:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:20:15,597 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-23 15:20:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:15,679 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-23 15:20:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2022-11-23 15:20:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:15,680 INFO L225 Difference]: With dead ends: 15 [2022-11-23 15:20:15,680 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:20:15,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:20:15,690 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:15,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:20:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:20:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 15:20:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-11-23 15:20:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-23 15:20:15,698 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2022-11-23 15:20:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:15,698 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-23 15:20:15,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-23 15:20:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-23 15:20:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:20:15,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:15,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:20:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:20:15,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:20:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1982248518, now seen corresponding path program 1 times [2022-11-23 15:20:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:15,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355558251] [2022-11-23 15:20:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:15,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:15,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355558251] [2022-11-23 15:20:15,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355558251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:15,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:15,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:20:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760359033] [2022-11-23 15:20:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:15,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:20:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:20:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:20:15,987 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-23 15:20:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:16,072 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-11-23 15:20:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:20:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2022-11-23 15:20:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:16,073 INFO L225 Difference]: With dead ends: 14 [2022-11-23 15:20:16,073 INFO L226 Difference]: Without dead ends: 13 [2022-11-23 15:20:16,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:20:16,082 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:16,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:20:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-23 15:20:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-23 15:20:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-23 15:20:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-23 15:20:16,090 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2022-11-23 15:20:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:16,090 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-23 15:20:16,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-23 15:20:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-23 15:20:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:20:16,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:16,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:16,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:20:16,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:20:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1136565395, now seen corresponding path program 1 times [2022-11-23 15:20:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:16,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795699941] [2022-11-23 15:20:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:16,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:16,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795699941] [2022-11-23 15:20:16,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795699941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:20:16,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467490366] [2022-11-23 15:20:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:16,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:20:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:20:16,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:20:16,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:20:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:20:16,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:20:16,730 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 15:20:16,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2022-11-23 15:20:16,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-11-23 15:20:16,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 15:20:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:16,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:20:17,133 INFO L321 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2022-11-23 15:20:17,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 36 [2022-11-23 15:20:17,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-23 15:20:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:17,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467490366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:20:17,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249543461] [2022-11-23 15:20:17,191 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:20:17,191 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:20:17,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:20:17,200 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:20:17,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:20:17,306 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-23 15:20:17,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-23 15:20:17,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-23 15:20:17,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2022-11-23 15:20:17,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:20:17,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 49 [2022-11-23 15:20:17,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:20:17,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:20:18,012 INFO L321 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-23 15:20:18,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 359 treesize of output 309 [2022-11-23 15:20:18,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:20:18,269 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 15:20:18,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 41 [2022-11-23 15:20:18,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:20:18,397 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 15:20:18,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 41 [2022-11-23 15:20:18,432 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:20:19,316 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '266#(and (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (not (<= 0 (+ 2147483649 |ULTIMATE.start_test_fun_#t~mem9#1|))) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (< (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|)) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= |ULTIMATE.start_main_#t~nondet12#1| 2147483647) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet12#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem9#1|))' at error location [2022-11-23 15:20:19,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:20:19,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:20:19,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-23 15:20:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590435151] [2022-11-23 15:20:19,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:20:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:20:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:20:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=583, Unknown=3, NotChecked=0, Total=702 [2022-11-23 15:20:19,319 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 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) [2022-11-23 15:20:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:19,640 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-23 15:20:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:20:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 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 10 [2022-11-23 15:20:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:19,642 INFO L225 Difference]: With dead ends: 13 [2022-11-23 15:20:19,642 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:20:19,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=848, Unknown=3, NotChecked=0, Total=1056 [2022-11-23 15:20:19,643 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:19,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:20:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:20:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:20:19,644 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) [2022-11-23 15:20:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:20:19,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-23 15:20:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:19,645 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:20:19,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 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) [2022-11-23 15:20:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:20:19,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:20:19,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-23 15:20:19,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-23 15:20:19,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-23 15:20:19,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-23 15:20:19,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:20:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:20:19,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:20:19,914 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 557) no Hoare annotation was computed. [2022-11-23 15:20:19,914 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:20:19,914 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 559) no Hoare annotation was computed. [2022-11-23 15:20:19,914 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 560) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L895 garLoopResultBuilder]: At program point L556-2(lines 555 561) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|)) (.cse1 (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) |ULTIMATE.start_test_fun_~y_ref~0#1.offset|))) (and (<= 0 (+ .cse0 2147483648)) (not (= |ULTIMATE.start_test_fun_~y_ref~0#1.base| |ULTIMATE.start_test_fun_~x_ref~0#1.base|)) (= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= .cse1 2147483647) (<= .cse0 2147483647) (<= 0 (+ .cse1 2147483648)))) [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 557) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 559) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point L559(line 559) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point L559-1(line 559) no Hoare annotation was computed. [2022-11-23 15:20:19,915 INFO L899 garLoopResultBuilder]: For program point L557(line 557) no Hoare annotation was computed. [2022-11-23 15:20:19,916 INFO L899 garLoopResultBuilder]: For program point L557-1(line 557) no Hoare annotation was computed. [2022-11-23 15:20:19,916 INFO L899 garLoopResultBuilder]: For program point L555-1(lines 555 561) no Hoare annotation was computed. [2022-11-23 15:20:19,916 INFO L895 garLoopResultBuilder]: At program point L555-3(lines 555 561) the Hoare annotation is: (or (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) 2147483648)) (and (= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (= |ULTIMATE.start_test_fun_~y_ref~0#1.base| |ULTIMATE.start_test_fun_~x_ref~0#1.base|))) [2022-11-23 15:20:19,919 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 15:20:19,922 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:20:19,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:20:19 BoogieIcfgContainer [2022-11-23 15:20:19,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:20:19,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:20:19,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:20:19,948 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:20:19,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:13" (3/4) ... [2022-11-23 15:20:19,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:20:19,961 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:20:19,962 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:20:19,962 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 15:20:19,962 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:20:19,999 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:20:19,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:20:20,000 INFO L158 Benchmark]: Toolchain (without parser) took 7981.40ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 108.6MB in the beginning and 141.6MB in the end (delta: -33.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-11-23 15:20:20,000 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 110.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:20:20,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.72ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 92.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:20:20,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.12ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:20:20,001 INFO L158 Benchmark]: Boogie Preprocessor took 49.45ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:20:20,001 INFO L158 Benchmark]: RCFGBuilder took 455.36ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 76.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:20:20,002 INFO L158 Benchmark]: TraceAbstraction took 6917.24ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 76.0MB in the beginning and 144.8MB in the end (delta: -68.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:20:20,002 INFO L158 Benchmark]: Witness Printer took 51.40ms. Allocated memory is still 190.8MB. Free memory was 144.8MB in the beginning and 141.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:20:20,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 110.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.72ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 92.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.12ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.45ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 455.36ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 76.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6917.24ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 76.0MB in the beginning and 144.8MB in the end (delta: -68.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 51.40ms. Allocated memory is still 190.8MB. Free memory was 144.8MB in the beginning and 141.6MB 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 - PositiveResult [Line: 557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 559]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 559]: 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 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 10 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, InterpolantAutomatonStates: 31, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 60 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 4 QuantifiedInterpolants, 593 SizeOfPredicates, 11 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 555]: Loop Invariant Derived loop invariant: 0 <= unknown-#memory_int-unknown[x_ref][x_ref] + 2147483648 || (y_ref == x_ref && y_ref == x_ref) - InvariantResult [Line: 555]: Loop Invariant Derived loop invariant: (((((0 <= unknown-#memory_int-unknown[x_ref][x_ref] + 2147483648 && !(y_ref == x_ref)) && x_ref == 0) && y_ref == 0) && unknown-#memory_int-unknown[y_ref][y_ref] <= 2147483647) && unknown-#memory_int-unknown[x_ref][x_ref] <= 2147483647) && 0 <= unknown-#memory_int-unknown[y_ref][y_ref] + 2147483648 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:20:20,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c95afc3-3b1a-41fb-8fc2-987dbcb4a47d/bin/utaipan-Q6hlc19bkW/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