./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/mcmillan2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/mcmillan2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX --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 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:01,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:02,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:13:02,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:02,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:02,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:02,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:02,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:02,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:02,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:02,123 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:02,124 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:02,125 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:02,127 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:02,127 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:02,128 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:02,128 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:02,129 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:02,129 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:02,130 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:02,130 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:02,131 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:02,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:02,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:02,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:02,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:02,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:02,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:02,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:02,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:02,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:02,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:02,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:02,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:02,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:02,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:02,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:02,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:02,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:02,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:02,141 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:02,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:02,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:02,142 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:02,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:02,143 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_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be [2023-11-12 00:13:02,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:02,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:02,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:02,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:02,494 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:02,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-lit/mcmillan2006.i [2023-11-12 00:13:05,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:06,006 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:06,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/sv-benchmarks/c/loop-lit/mcmillan2006.i [2023-11-12 00:13:06,015 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/data/dde863a7b/473080f19e8a4f65ba185ba23c6f6627/FLAG7b267fb2e [2023-11-12 00:13:06,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/data/dde863a7b/473080f19e8a4f65ba185ba23c6f6627 [2023-11-12 00:13:06,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:06,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:06,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:06,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:06,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:06,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f7fc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06, skipping insertion in model container [2023-11-12 00:13:06,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:06,241 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_3b807d23-c2ad-4759-bcf4-a14d99e36986/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2023-11-12 00:13:06,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:06,267 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:06,280 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_3b807d23-c2ad-4759-bcf4-a14d99e36986/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2023-11-12 00:13:06,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:06,301 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:06,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06 WrapperNode [2023-11-12 00:13:06,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:06,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:06,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:06,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:06,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,340 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-12 00:13:06,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:06,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:06,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:06,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:06,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:06,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:06,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:06,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:06,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (1/1) ... [2023-11-12 00:13:06,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:06,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:06,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:13:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:13:06,528 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:06,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:06,719 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:06,753 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:06,753 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:13:06,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06 BoogieIcfgContainer [2023-11-12 00:13:06,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:06,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:06,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:06,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:06,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:06" (1/3) ... [2023-11-12 00:13:06,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0a4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:06, skipping insertion in model container [2023-11-12 00:13:06,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:06" (2/3) ... [2023-11-12 00:13:06,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0a4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:06, skipping insertion in model container [2023-11-12 00:13:06,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06" (3/3) ... [2023-11-12 00:13:06,765 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2023-11-12 00:13:06,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:06,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:13:06,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:06,865 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;@3732c5aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:06,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:13:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-11-12 00:13:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:13:06,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:06,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:13:06,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:06,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1910556134, now seen corresponding path program 1 times [2023-11-12 00:13:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608517337] [2023-11-12 00:13:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:07,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:07,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608517337] [2023-11-12 00:13:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608517337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49870683] [2023-11-12 00:13:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:07,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:07,301 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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 1.5) internal successors, (6), 4 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) [2023-11-12 00:13:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:07,351 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2023-11-12 00:13:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:07,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2023-11-12 00:13:07,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:07,361 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:13:07,361 INFO L226 Difference]: Without dead ends: 9 [2023-11-12 00:13:07,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:07,368 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:07,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-12 00:13:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-12 00:13:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-11-12 00:13:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-12 00:13:07,399 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-11-12 00:13:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:07,400 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-12 00:13:07,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-11-12 00:13:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-12 00:13:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:13:07,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:07,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:07,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:07,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:07,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash 896668580, now seen corresponding path program 1 times [2023-11-12 00:13:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848208801] [2023-11-12 00:13:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:07,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848208801] [2023-11-12 00:13:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848208801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065305349] [2023-11-12 00:13:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:07,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:07,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:07,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:07,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:13:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:07,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:13:07,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:07,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:13:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:08,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:08,119 INFO L351 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 14 treesize of output 12 [2023-11-12 00:13:08,126 INFO L351 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 14 treesize of output 12 [2023-11-12 00:13:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065305349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:08,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1156900853] [2023-11-12 00:13:08,173 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-12 00:13:08,173 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:08,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:08,186 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:08,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:08,566 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:08,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '99#(and (exists ((|v_ULTIMATE.start_main_~i~0#1_26| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_26|) (<= |ULTIMATE.start_main_~n~0#1| 1000))) (= |ULTIMATE.start_main_#t~mem5#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) 0)) (not (= |ULTIMATE.start_main_#t~mem5#1| 0)) (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-12 00:13:08,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:13:08,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-12 00:13:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759314295] [2023-11-12 00:13:08,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:13:08,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:13:08,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:13:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:13:08,823 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-12 00:13:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:08,916 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-12 00:13:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:13:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 [2023-11-12 00:13:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:08,917 INFO L225 Difference]: With dead ends: 14 [2023-11-12 00:13:08,917 INFO L226 Difference]: Without dead ends: 12 [2023-11-12 00:13:08,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:13:08,919 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-12 00:13:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-12 00:13:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) 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) [2023-11-12 00:13:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-12 00:13:08,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-11-12 00:13:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:08,934 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-12 00:13:08,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-12 00:13:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-12 00:13:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:08,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:08,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:08,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:13:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:09,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:09,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2037761393, now seen corresponding path program 1 times [2023-11-12 00:13:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572219587] [2023-11-12 00:13:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:09,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572219587] [2023-11-12 00:13:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572219587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790717083] [2023-11-12 00:13:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:09,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:09,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:09,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:13:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:09,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:13:09,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:09,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790717083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420697587] [2023-11-12 00:13:09,446 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:13:09,446 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:09,446 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:09,447 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:09,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:09,948 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:10,154 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '205#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (not (= |ULTIMATE.start_main_#t~mem5#1| 0)) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= (+ |ULTIMATE.start_main_~i~1#1| 1) |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~mem5#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (* |ULTIMATE.start_main_~i~1#1| 4))))' at error location [2023-11-12 00:13:10,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:13:10,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:10,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-12 00:13:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565313762] [2023-11-12 00:13:10,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:13:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:13:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:13:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:13:10,157 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2023-11-12 00:13:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:10,193 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-11-12 00:13:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:13:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 [2023-11-12 00:13:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:10,194 INFO L225 Difference]: With dead ends: 21 [2023-11-12 00:13:10,194 INFO L226 Difference]: Without dead ends: 12 [2023-11-12 00:13:10,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:13:10,196 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:10,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-12 00:13:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-12 00:13:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2023-11-12 00:13:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-12 00:13:10,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2023-11-12 00:13:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:10,201 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-12 00:13:10,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2023-11-12 00:13:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-12 00:13:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:10,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:10,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:10,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:10,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:10,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:10,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash 778125081, now seen corresponding path program 2 times [2023-11-12 00:13:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:10,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296271016] [2023-11-12 00:13:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:10,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:10,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296271016] [2023-11-12 00:13:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296271016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085373336] [2023-11-12 00:13:10,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:13:10,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:10,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:10,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:13:10,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:13:10,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:13:10,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:13:10,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:10,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:13:10,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 18 [2023-11-12 00:13:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:11,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:11,356 INFO L351 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 34 treesize of output 30 [2023-11-12 00:13:11,376 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 00:13:11,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 25 [2023-11-12 00:13:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:13:11,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085373336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516081428] [2023-11-12 00:13:11,408 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:13:11,408 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:11,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:11,409 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:11,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:13:11,747 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:13:12,058 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '338#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (not (= |ULTIMATE.start_main_#t~mem5#1| 0)) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= (+ |ULTIMATE.start_main_~i~1#1| 1) |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~mem5#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (* |ULTIMATE.start_main_~i~1#1| 4))))' at error location [2023-11-12 00:13:12,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:13:12,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:13:12,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2023-11-12 00:13:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471926685] [2023-11-12 00:13:12,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:13:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-12 00:13:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-12 00:13:12,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:13:12,062 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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) [2023-11-12 00:13:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:12,637 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-11-12 00:13:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 00:13:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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 11 [2023-11-12 00:13:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:12,639 INFO L225 Difference]: With dead ends: 22 [2023-11-12 00:13:12,639 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:13:12,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 00:13:12,641 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:12,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:13:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:13:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:13:12,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-12 00:13:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:12,643 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:13:12,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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) [2023-11-12 00:13:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:13:12,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:13:12,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:13:12,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:12,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:13:13,093 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:13:13,094 INFO L895 garLoopResultBuilder]: At program point L31-3(line 31) the Hoare annotation is: (let ((.cse5 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse0 (= |ULTIMATE.start_main_~i~1#1| 0)) (.cse3 (<= |ULTIMATE.start_main_~n~0#1| 1)) (.cse1 (= 0 (select .cse5 0))) (.cse6 (+ |ULTIMATE.start_main_~i~1#1| 1)) (.cse4 (= (select .cse5 4) 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (or (and .cse0 (<= |ULTIMATE.start_main_~n~0#1| 0)) (and .cse1 .cse0 .cse2 .cse3) (and .cse1 .cse4 .cse2 (= (select .cse5 (* |ULTIMATE.start_main_~i~1#1| 4)) 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_31| Int)) (or (= (select .cse5 (* |v_ULTIMATE.start_main_~i~1#1_31| 4)) 0) (< |v_ULTIMATE.start_main_~i~1#1_31| .cse6) (< |ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_31| 1))))) (and .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse3) (and .cse1 (< |ULTIMATE.start_main_~n~0#1| .cse6) .cse4 .cse2)))) [2023-11-12 00:13:13,094 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2023-11-12 00:13:13,094 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 23) no Hoare annotation was computed. [2023-11-12 00:13:13,094 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:13:13,094 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 26 33) no Hoare annotation was computed. [2023-11-12 00:13:13,094 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-12 00:13:13,095 INFO L895 garLoopResultBuilder]: At program point L30-3(line 30) the Hoare annotation is: (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (= 0 (select .cse2 0))) (.cse0 (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0) (and .cse1 (= |ULTIMATE.start_main_~i~0#1| 1) .cse0) (and .cse1 (forall ((|v_ULTIMATE.start_main_~i~1#1_31| Int)) (or (= (select .cse2 (* |v_ULTIMATE.start_main_~i~1#1_31| 4)) 0) (< |v_ULTIMATE.start_main_~i~1#1_31| 1) (< |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_31| 1)))) (= (select .cse2 4) 0) .cse0)))) [2023-11-12 00:13:13,095 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2023-11-12 00:13:13,095 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-12 00:13:13,099 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-12 00:13:13,101 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:13,122 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,123 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,123 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,124 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,127 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,127 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,127 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,127 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,128 ERROR L464 ceAbstractionStarter]: Failed to backtranslate (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (= 0 (select .cse2 0))) (.cse0 (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0) (and .cse1 (= |ULTIMATE.start_main_~i~0#1| 1) .cse0) (and .cse1 (forall ((|v_ULTIMATE.start_main_~i~1#1_31| Int)) (or (= (select .cse2 (* |v_ULTIMATE.start_main_~i~1#1_31| 4)) 0) (< |v_ULTIMATE.start_main_~i~1#1_31| 1) (< |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_31| 1)))) (= (select .cse2 4) 0) .cse0)))) [2023-11-12 00:13:13,132 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,133 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,134 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,134 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated [2023-11-12 00:13:13,134 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,134 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,135 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,135 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,140 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,141 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,141 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,141 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated [2023-11-12 00:13:13,142 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,142 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,142 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,142 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,143 ERROR L464 ceAbstractionStarter]: Failed to backtranslate (let ((.cse5 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse0 (= |ULTIMATE.start_main_~i~1#1| 0)) (.cse3 (<= |ULTIMATE.start_main_~n~0#1| 1)) (.cse1 (= 0 (select .cse5 0))) (.cse6 (+ |ULTIMATE.start_main_~i~1#1| 1)) (.cse4 (= (select .cse5 4) 0)) (.cse2 (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (or (and .cse0 (<= |ULTIMATE.start_main_~n~0#1| 0)) (and .cse1 .cse0 .cse2 .cse3) (and .cse1 .cse4 .cse2 (= (select .cse5 (* |ULTIMATE.start_main_~i~1#1| 4)) 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_31| Int)) (or (= (select .cse5 (* |v_ULTIMATE.start_main_~i~1#1_31| 4)) 0) (< |v_ULTIMATE.start_main_~i~1#1_31| .cse6) (< |ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_31| 1))))) (and .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse3) (and .cse1 (< |ULTIMATE.start_main_~n~0#1| .cse6) .cse4 .cse2)))) [2023-11-12 00:13:13,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:13 BoogieIcfgContainer [2023-11-12 00:13:13,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:13,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:13,145 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:13,145 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:13,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:06" (3/4) ... [2023-11-12 00:13:13,148 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:13:13,158 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-12 00:13:13,158 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-12 00:13:13,158 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:13:13,159 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:13:13,251 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:13:13,252 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:13:13,252 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:13,253 INFO L158 Benchmark]: Toolchain (without parser) took 7210.73ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 122.6MB in the beginning and 138.3MB in the end (delta: -15.6MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-11-12 00:13:13,253 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 134.2MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:13,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.98ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 111.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:13:13,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.99ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:13,255 INFO L158 Benchmark]: Boogie Preprocessor took 28.25ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:13,255 INFO L158 Benchmark]: RCFGBuilder took 385.55ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 97.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:13:13,256 INFO L158 Benchmark]: TraceAbstraction took 6386.35ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 97.1MB in the beginning and 142.5MB in the end (delta: -45.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:13,256 INFO L158 Benchmark]: Witness Printer took 107.46ms. Allocated memory is still 201.3MB. Free memory was 142.5MB in the beginning and 138.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:13:13,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 134.2MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.98ms. Allocated memory is still 167.8MB. Free memory was 122.2MB in the beginning and 111.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.99ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.25ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.55ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 97.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6386.35ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 97.1MB in the beginning and 142.5MB in the end (delta: -45.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 107.46ms. Allocated memory is still 201.3MB. Free memory was 142.5MB in the beginning and 138.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated * 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: 20]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 237 IncrementalHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 14 mSDtfsCounter, 237 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 14 NumberOfFragments, 172 HoareAnnotationTreeSize, 2 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 173 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 5 QuantifiedInterpolants, 601 SizeOfPredicates, 24 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 6/27 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 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2023-11-12 00:13:13,290 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,291 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,291 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,291 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,292 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,298 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < 1) || ~i~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,299 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated Derived loop invariant: NULL - InvariantResult [Line: 31]: Loop Invariant [2023-11-12 00:13:13,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,300 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated [2023-11-12 00:13:13,301 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,302 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,303 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,305 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,306 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated [2023-11-12 00:13:13,306 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][~i~1 * 4] could not be translated [2023-11-12 00:13:13,306 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_main_~i~1#1_31 : int :: (#memory_int[~x~0!base][v_ULTIMATE.start_main_~i~1#1_31 * 4] == 0 || v_ULTIMATE.start_main_~i~1#1_31 < ~i~1 + 1) || ~n~0 < v_ULTIMATE.start_main_~i~1#1_31 + 1) could not be translated [2023-11-12 00:13:13,313 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,313 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][0] could not be translated [2023-11-12 00:13:13,313 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~x~0!base][4] could not be translated Derived loop invariant: NULL RESULT: Ultimate proved your program to be correct! [2023-11-12 00:13:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b807d23-c2ad-4759-bcf4-a14d99e36986/bin/utaipan-verify-NcY6lQBIFX/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