./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fa3b5fd31b0165adcc8931bdb36ef94241c9d1c36f2e335867de97d47f976fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:19:18,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:19:19,018 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:19:19,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:19:19,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:19:19,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:19:19,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:19:19,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:19:19,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:19:19,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:19:19,059 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:19:19,060 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:19:19,061 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:19:19,061 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:19:19,062 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:19:19,063 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:19:19,063 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:19:19,064 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:19:19,065 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:19:19,066 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:19:19,066 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:19:19,067 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:19:19,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:19:19,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:19:19,069 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:19:19,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:19:19,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:19:19,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:19:19,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:19:19,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:19:19,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:19:19,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:19:19,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:19:19,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:19:19,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:19:19,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:19:19,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:19:19,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:19:19,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:19:19,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:19:19,079 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:19:19,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:19:19,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:19:19,080 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:19:19,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:19:19,081 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_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fa3b5fd31b0165adcc8931bdb36ef94241c9d1c36f2e335867de97d47f976fb [2023-11-19 04:19:19,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:19:19,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:19:19,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:19:19,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:19:19,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:19:19,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2023-11-19 04:19:22,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:19:23,024 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:19:23,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2023-11-19 04:19:23,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/data/f7031bafb/a37ca1395e2746198865daab9ddcc503/FLAG6edb0507b [2023-11-19 04:19:23,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/data/f7031bafb/a37ca1395e2746198865daab9ddcc503 [2023-11-19 04:19:23,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:19:23,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:19:23,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:19:23,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:19:23,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:19:23,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77524712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23, skipping insertion in model container [2023-11-19 04:19:23,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:19:23,258 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_ee1e5793-f644-4dca-b4e7-498d0536d476/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i[300,313] [2023-11-19 04:19:23,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:19:23,289 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:19:23,304 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_ee1e5793-f644-4dca-b4e7-498d0536d476/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i[300,313] [2023-11-19 04:19:23,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:19:23,325 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:19:23,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23 WrapperNode [2023-11-19 04:19:23,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:19:23,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:19:23,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:19:23,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:19:23,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,366 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2023-11-19 04:19:23,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:19:23,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:19:23,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:19:23,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:19:23,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:19:23,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:19:23,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:19:23,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:19:23,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (1/1) ... [2023-11-19 04:19:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:19:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:19:23,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:19:23,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:19:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:19:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:19:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:19:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:19:23,551 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:19:23,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:19:23,670 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:19:23,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:19:23,701 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:19:23,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:19:23 BoogieIcfgContainer [2023-11-19 04:19:23,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:19:23,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:19:23,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:19:23,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:19:23,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:19:23" (1/3) ... [2023-11-19 04:19:23,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2990de6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:19:23, skipping insertion in model container [2023-11-19 04:19:23,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:23" (2/3) ... [2023-11-19 04:19:23,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2990de6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:19:23, skipping insertion in model container [2023-11-19 04:19:23,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:19:23" (3/3) ... [2023-11-19 04:19:23,718 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2023-11-19 04:19:23,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:19:23,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:19:23,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:19:23,820 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;@2a257659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:19:23,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:19:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:19:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:19:23,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:23,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:19:23,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:23,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1887918, now seen corresponding path program 1 times [2023-11-19 04:19:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968702453] [2023-11-19 04:19:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:19:24,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:24,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968702453] [2023-11-19 04:19:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968702453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:24,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:24,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:19:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170072333] [2023-11-19 04:19:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:24,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:19:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:19:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:24,182 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:19:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:24,286 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2023-11-19 04:19:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:19:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:19:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:24,297 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:19:24,297 INFO L226 Difference]: Without dead ends: 8 [2023-11-19 04:19:24,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:24,304 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:24,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:19:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-19 04:19:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-11-19 04:19:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:19:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-19 04:19:24,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2023-11-19 04:19:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:24,337 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-19 04:19:24,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:19:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-19 04:19:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:19:24,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:24,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:19:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:19:24,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:24,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1814223403, now seen corresponding path program 1 times [2023-11-19 04:19:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420831220] [2023-11-19 04:19:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:19:24,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:24,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420831220] [2023-11-19 04:19:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420831220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:19:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266397854] [2023-11-19 04:19:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:19:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:19:24,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:19:24,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:19:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:24,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:19:24,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:19:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:19:24,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:19:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:19:24,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266397854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:19:24,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1674903381] [2023-11-19 04:19:24,639 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-11-19 04:19:24,639 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:19:24,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:19:24,651 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:19:24,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:19:24,966 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:19:25,007 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '75#(and (<= 1 |#StackHeapBarrier|) (= 3 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:19:25,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:19:25,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:19:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-11-19 04:19:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845956391] [2023-11-19 04:19:25,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:19:25,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:19:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:19:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:19:25,013 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 5 states, 5 states have (on average 1.2) 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) [2023-11-19 04:19:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:25,034 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-11-19 04:19:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:19:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) 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 [2023-11-19 04:19:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:25,036 INFO L225 Difference]: With dead ends: 12 [2023-11-19 04:19:25,036 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 04:19:25,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:19:25,039 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:25,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:19:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 04:19:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 04:19:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:19:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 04:19:25,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2023-11-19 04:19:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:25,044 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 04:19:25,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) 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) [2023-11-19 04:19:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 04:19:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:19:25,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:25,046 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2023-11-19 04:19:25,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:19:25,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:19:25,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:25,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash -288097688, now seen corresponding path program 2 times [2023-11-19 04:19:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192788661] [2023-11-19 04:19:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:25,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:19:25,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:19:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:19:25,307 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:19:25,307 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:19:25,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:19:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:19:25,315 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-19 04:19:25,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:19:25,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:19:25 BoogieIcfgContainer [2023-11-19 04:19:25,338 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:19:25,338 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:19:25,339 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:19:25,339 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:19:25,340 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:19:23" (3/4) ... [2023-11-19 04:19:25,341 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:19:25,383 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:19:25,383 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:19:25,384 INFO L158 Benchmark]: Toolchain (without parser) took 2326.87ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 95.7MB in the beginning and 92.8MB in the end (delta: 2.9MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,385 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 136.3MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:19:25,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.75ms. Allocated memory is still 136.3MB. Free memory was 95.3MB in the beginning and 85.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.42ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:19:25,386 INFO L158 Benchmark]: Boogie Preprocessor took 24.17ms. Allocated memory is still 136.3MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,387 INFO L158 Benchmark]: RCFGBuilder took 313.18ms. Allocated memory is still 136.3MB. Free memory was 83.1MB in the beginning and 73.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,387 INFO L158 Benchmark]: TraceAbstraction took 1628.07ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 73.0MB in the beginning and 94.0MB in the end (delta: -21.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,388 INFO L158 Benchmark]: Witness Printer took 44.75ms. Allocated memory is still 180.4MB. Free memory was 94.0MB in the beginning and 92.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:19:25,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 136.3MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.75ms. Allocated memory is still 136.3MB. Free memory was 95.3MB in the beginning and 85.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.42ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.17ms. Allocated memory is still 136.3MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.18ms. Allocated memory is still 136.3MB. Free memory was 83.1MB in the beginning and 73.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1628.07ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 73.0MB in the beginning and 94.0MB in the end (delta: -21.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Witness Printer took 44.75ms. Allocated memory is still 180.4MB. Free memory was 94.0MB in the beginning and 92.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int i=0; VAL [i=0] [L15] COND TRUE i<5 [L16] i++ VAL [i=1] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L15] COND TRUE i<5 [L16] i++ VAL [i=2] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L15] COND TRUE i<5 [L16] i++ VAL [i=3] [L18] (i!=3) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 4 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 04:19:25,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1e5793-f644-4dca-b4e7-498d0536d476/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE