./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c --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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/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 ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:46,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:46,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:05:46,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:46,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:46,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:46,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:46,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:46,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:46,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:46,484 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:46,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:46,486 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:46,488 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:46,489 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:46,489 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:46,490 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:46,490 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:46,491 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:46,492 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:46,492 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:46,499 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:46,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:46,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:05:46,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:05:46,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:46,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:05:46,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:46,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:05:46,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:46,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:05:46,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:05:46,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:05:46,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:46,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:46,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:46,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:46,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:46,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:46,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:05:46,508 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:46,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:46,509 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:05:46,509 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:46,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:46,510 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d [2023-11-19 05:05:46,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:46,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:46,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:46,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:46,844 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:46,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2023-11-19 05:05:50,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:50,330 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:50,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2023-11-19 05:05:50,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/data/4766505bc/729d485f00984f479069df991223c8ca/FLAG24a7cd380 [2023-11-19 05:05:50,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/data/4766505bc/729d485f00984f479069df991223c8ca [2023-11-19 05:05:50,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:50,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:50,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:50,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:50,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:50,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4610ade6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50, skipping insertion in model container [2023-11-19 05:05:50,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,421 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:50,647 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2023-11-19 05:05:50,668 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2023-11-19 05:05:50,674 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2023-11-19 05:05:50,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:50,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:05:50,723 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2023-11-19 05:05:50,741 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2023-11-19 05:05:50,745 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_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2023-11-19 05:05:50,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:50,774 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:05:50,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50 WrapperNode [2023-11-19 05:05:50,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:50,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:50,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:05:50,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:05:50,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,841 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2023-11-19 05:05:50,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:50,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:05:50,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:05:50,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:05:50,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:05:50,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:05:50,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:05:50,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:05:50,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (1/1) ... [2023-11-19 05:05:50,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:50,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:05:50,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:05:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:05:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:05:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:05:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:05:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:05:50,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:05:50,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:05:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:05:51,061 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:05:51,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:05:51,285 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:05:51,316 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:05:51,316 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:05:51,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:51 BoogieIcfgContainer [2023-11-19 05:05:51,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:05:51,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:05:51,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:05:51,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:05:51,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:50" (1/3) ... [2023-11-19 05:05:51,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f477282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:51, skipping insertion in model container [2023-11-19 05:05:51,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:50" (2/3) ... [2023-11-19 05:05:51,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f477282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:51, skipping insertion in model container [2023-11-19 05:05:51,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:51" (3/3) ... [2023-11-19 05:05:51,346 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2023-11-19 05:05:51,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:05:51,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 05:05:51,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:05:51,430 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;@31dbc27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:05:51,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:05:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:05:51,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:51,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:51,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:51,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526620, now seen corresponding path program 1 times [2023-11-19 05:05:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084568901] [2023-11-19 05:05:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:51,749 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 05:05:51,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084568901] [2023-11-19 05:05:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084568901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:51,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:51,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464495443] [2023-11-19 05:05:51,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:51,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:51,793 INFO L87 Difference]: Start difference. First operand has 30 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 29 states have internal predecessors, (44), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 05:05:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:51,848 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2023-11-19 05:05:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) Word has length 9 [2023-11-19 05:05:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:51,863 INFO L225 Difference]: With dead ends: 59 [2023-11-19 05:05:51,863 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 05:05:51,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:51,871 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:51,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 05:05:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-19 05:05:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.4) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2023-11-19 05:05:51,920 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 9 [2023-11-19 05:05:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:51,920 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2023-11-19 05:05:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 05:05:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-11-19 05:05:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:05:51,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:51,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:05:51,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:51,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1865672586, now seen corresponding path program 1 times [2023-11-19 05:05:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:51,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722217960] [2023-11-19 05:05:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:52,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722217960] [2023-11-19 05:05:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722217960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161970633] [2023-11-19 05:05:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:52,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:52,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:52,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:52,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:05:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:52,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:05:52,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:52,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161970633] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:52,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:05:52,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-19 05:05:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311281185] [2023-11-19 05:05:52,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:05:52,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:05:52,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:05:52,505 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-11-19 05:05:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:52,537 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-11-19 05:05:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) Word has length 10 [2023-11-19 05:05:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:52,542 INFO L225 Difference]: With dead ends: 35 [2023-11-19 05:05:52,542 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 05:05:52,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:05:52,546 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:52,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 05:05:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-19 05:05:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.36) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-11-19 05:05:52,561 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 10 [2023-11-19 05:05:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:52,561 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-11-19 05:05:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-11-19 05:05:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-11-19 05:05:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:05:52,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:52,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:52,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:52,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:52,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:52,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 112852896, now seen corresponding path program 1 times [2023-11-19 05:05:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144399609] [2023-11-19 05:05:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:52,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144399609] [2023-11-19 05:05:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144399609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162130657] [2023-11-19 05:05:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:52,867 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:52,918 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2023-11-19 05:05:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:52,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 [2023-11-19 05:05:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:52,921 INFO L225 Difference]: With dead ends: 55 [2023-11-19 05:05:52,922 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:05:52,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:52,925 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:52,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:05:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2023-11-19 05:05:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-19 05:05:52,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 11 [2023-11-19 05:05:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:52,937 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-19 05:05:52,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-19 05:05:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:05:52,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:52,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:05:52,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:52,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 44363387, now seen corresponding path program 1 times [2023-11-19 05:05:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40259752] [2023-11-19 05:05:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:53,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40259752] [2023-11-19 05:05:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40259752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:53,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:53,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:05:53,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774752108] [2023-11-19 05:05:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:05:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:53,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:05:53,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:53,051 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:53,086 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-11-19 05:05:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:05:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2023-11-19 05:05:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:53,094 INFO L225 Difference]: With dead ends: 48 [2023-11-19 05:05:53,094 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:05:53,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:53,096 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:53,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 76 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:05:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2023-11-19 05:05:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-19 05:05:53,102 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2023-11-19 05:05:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:53,103 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-19 05:05:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-19 05:05:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:05:53,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:53,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:05:53,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:53,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1437227400, now seen corresponding path program 1 times [2023-11-19 05:05:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660680906] [2023-11-19 05:05:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:53,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:53,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660680906] [2023-11-19 05:05:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660680906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:53,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195258738] [2023-11-19 05:05:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:53,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:53,194 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-19 05:05:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:53,242 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-19 05:05:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:53,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2023-11-19 05:05:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:53,243 INFO L225 Difference]: With dead ends: 51 [2023-11-19 05:05:53,243 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 05:05:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:53,245 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:53,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 05:05:53,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-11-19 05:05:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-11-19 05:05:53,258 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2023-11-19 05:05:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:53,259 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-11-19 05:05:53,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-19 05:05:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-11-19 05:05:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:05:53,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:53,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:53,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:05:53,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:53,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -432888485, now seen corresponding path program 1 times [2023-11-19 05:05:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949182311] [2023-11-19 05:05:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:53,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:53,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949182311] [2023-11-19 05:05:53,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949182311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547073533] [2023-11-19 05:05:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:53,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:53,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:05:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:53,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:05:53,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:53,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547073533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:05:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111762869] [2023-11-19 05:05:53,668 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 05:05:53,668 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:05:53,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:05:53,678 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:05:53,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:05:55,071 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:05:56,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2111762869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:56,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:05:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2023-11-19 05:05:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529982798] [2023-11-19 05:05:56,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:05:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:56,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:05:56,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:05:56,851 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:57,107 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-11-19 05:05:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:05:57,108 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:05:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:57,109 INFO L225 Difference]: With dead ends: 52 [2023-11-19 05:05:57,109 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 05:05:57,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:05:57,110 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:57,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 05:05:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-11-19 05:05:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-11-19 05:05:57,115 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 17 [2023-11-19 05:05:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:57,116 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-11-19 05:05:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-11-19 05:05:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:05:57,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:57,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:57,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:57,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:05:57,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1216046569, now seen corresponding path program 1 times [2023-11-19 05:05:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927972138] [2023-11-19 05:05:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:57,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927972138] [2023-11-19 05:05:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927972138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:57,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:57,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:05:57,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727720055] [2023-11-19 05:05:57,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:05:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:05:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:05:57,460 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:57,530 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-11-19 05:05:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:05:57,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2023-11-19 05:05:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:57,535 INFO L225 Difference]: With dead ends: 50 [2023-11-19 05:05:57,535 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 05:05:57,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:05:57,537 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 59 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:57,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 05:05:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2023-11-19 05:05:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-19 05:05:57,548 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2023-11-19 05:05:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:57,548 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-19 05:05:57,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-19 05:05:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:05:57,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:57,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:57,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:05:57,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:57,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash 606111572, now seen corresponding path program 1 times [2023-11-19 05:05:57,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:57,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776229713] [2023-11-19 05:05:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:57,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:05:57,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:57,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776229713] [2023-11-19 05:05:57,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776229713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:57,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743149226] [2023-11-19 05:05:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:57,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:57,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:57,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:57,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:05:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:57,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:05:57,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:57,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:05:57,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743149226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:05:57,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2056989771] [2023-11-19 05:05:57,880 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 05:05:57,880 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:05:57,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:05:57,881 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:05:57,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:05:59,156 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:06:00,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '943#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= ~__tmp_155_0~0 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (or (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296))) (<= 2147483648 (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) (and (or (and (<= 2147483648 (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)) (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296)))) (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296))) (<= (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 2147483647))) (<= (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 2147483647))) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (<= (+ (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)))' at error location [2023-11-19 05:06:00,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:06:00,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:06:00,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2023-11-19 05:06:00,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119731581] [2023-11-19 05:06:00,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:06:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:06:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:06:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:06:00,731 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:00,846 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2023-11-19 05:06:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:06:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 19 [2023-11-19 05:06:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:00,847 INFO L225 Difference]: With dead ends: 69 [2023-11-19 05:06:00,847 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 05:06:00,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:06:00,849 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:06:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 05:06:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-19 05:06:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-19 05:06:00,854 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2023-11-19 05:06:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:00,854 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-19 05:06:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-19 05:06:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 05:06:00,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:00,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:00,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:06:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:01,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:01,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1335604174, now seen corresponding path program 1 times [2023-11-19 05:06:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93686171] [2023-11-19 05:06:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:01,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93686171] [2023-11-19 05:06:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93686171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:06:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962480234] [2023-11-19 05:06:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:01,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:01,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:06:01,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:06:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:01,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:06:01,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:01,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:06:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962480234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:06:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749522831] [2023-11-19 05:06:01,386 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-19 05:06:01,386 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:06:01,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:06:01,387 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:06:01,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:06:04,184 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:06:09,635 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1220#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1))' at error location [2023-11-19 05:06:09,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:06:09,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:06:09,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-19 05:06:09,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860955138] [2023-11-19 05:06:09,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:06:09,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:06:09,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:06:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:06:09,638 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:09,712 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-11-19 05:06:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:06:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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 25 [2023-11-19 05:06:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:09,713 INFO L225 Difference]: With dead ends: 66 [2023-11-19 05:06:09,713 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 05:06:09,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:06:09,714 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:09,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:06:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 05:06:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-19 05:06:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-19 05:06:09,720 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2023-11-19 05:06:09,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:09,720 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-19 05:06:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-19 05:06:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:06:09,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:09,722 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:09,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:06:09,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:09,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:09,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1712658354, now seen corresponding path program 2 times [2023-11-19 05:06:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841975750] [2023-11-19 05:06:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:10,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841975750] [2023-11-19 05:06:10,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841975750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:06:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995292050] [2023-11-19 05:06:10,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:06:10,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:10,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:10,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:06:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:06:10,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:06:10,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:06:10,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 05:06:10,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,141 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:06:12,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:06:12,148 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:06:12,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:06:12,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 304 treesize of output 145 [2023-11-19 05:06:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 05:06:12,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:06:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995292050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:06:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 18 [2023-11-19 05:06:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532980162] [2023-11-19 05:06:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:06:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:06:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:06:12,400 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:12,902 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-11-19 05:06:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:06:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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 29 [2023-11-19 05:06:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:12,904 INFO L225 Difference]: With dead ends: 51 [2023-11-19 05:06:12,904 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:06:12,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:06:12,905 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:12,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 39 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:06:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:06:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:06:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:06:12,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-11-19 05:06:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:06:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:06:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:06:12,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:06:12,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 05:06:12,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-19 05:06:12,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-19 05:06:12,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:06:13,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:13,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point L89(lines 64 97) no Hoare annotation was computed. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point L52(lines 50 143) no Hoare annotation was computed. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2023-11-19 05:06:13,300 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 172) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point $Ultimate##32(lines 105 131) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point $Ultimate##30(lines 102 136) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point L69(lines 66 92) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 166) no Hoare annotation was computed. [2023-11-19 05:06:13,301 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-11-19 05:06:13,302 INFO L899 garLoopResultBuilder]: For program point L148(lines 33 156) no Hoare annotation was computed. [2023-11-19 05:06:13,302 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 (<= 2 |ULTIMATE.start_main_~#main__array~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= ~__tmp_155_0~0 0)) (.cse4 (= ~__return_136~0 0)) (.cse5 (= ~__return_main~0 0)) (.cse6 (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~i~0#1| 0) .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (<= (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 99999) .cse4 (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse5 .cse6))) [2023-11-19 05:06:13,302 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-11-19 05:06:13,302 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-11-19 05:06:13,302 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 171) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 124) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 151) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L129(lines 102 136) no Hoare annotation was computed. [2023-11-19 05:06:13,303 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 161) no Hoare annotation was computed. [2023-11-19 05:06:13,304 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2023-11-19 05:06:13,304 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-11-19 05:06:13,308 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:13,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:06:13,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:06:13 BoogieIcfgContainer [2023-11-19 05:06:13,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:06:13,345 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:06:13,345 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:06:13,345 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:06:13,346 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:51" (3/4) ... [2023-11-19 05:06:13,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:06:13,369 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 05:06:13,369 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 05:06:13,369 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:06:13,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:06:13,471 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:06:13,472 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:06:13,472 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:06:13,472 INFO L158 Benchmark]: Toolchain (without parser) took 23098.36ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 126.6MB in the beginning and 145.8MB in the end (delta: -19.3MB). Peak memory consumption was 153.2MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,473 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory was 103.2MB in the beginning and 103.1MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:13,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.24ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 114.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.62ms. Allocated memory is still 157.3MB. Free memory was 114.1MB in the beginning and 112.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,474 INFO L158 Benchmark]: Boogie Preprocessor took 28.23ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 111.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,475 INFO L158 Benchmark]: RCFGBuilder took 463.09ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 96.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,475 INFO L158 Benchmark]: TraceAbstraction took 22005.97ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 95.3MB in the beginning and 151.1MB in the end (delta: -55.8MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,475 INFO L158 Benchmark]: Witness Printer took 126.93ms. Allocated memory is still 327.2MB. Free memory was 151.1MB in the beginning and 145.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:06:13,477 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 130.0MB. Free memory was 103.2MB in the beginning and 103.1MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.24ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 114.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.62ms. Allocated memory is still 157.3MB. Free memory was 114.1MB in the beginning and 112.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.23ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 111.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.09ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 96.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22005.97ms. Allocated memory was 157.3MB in the beginning and 327.2MB in the end (delta: 169.9MB). Free memory was 95.3MB in the beginning and 151.1MB in the end (delta: -55.8MB). Peak memory consumption was 115.5MB. Max. memory is 16.1GB. * Witness Printer took 126.93ms. Allocated memory is still 327.2MB. Free memory was 151.1MB in the beginning and 145.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 114]: 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, 30 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 21.9s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 608 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 377 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 231 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 7 NumberOfFragments, 58 HoareAnnotationTreeSize, 1 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 175 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 261 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1276 SizeOfPredicates, 8 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 47/85 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: OVERALL_TIME: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 1.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME: 1.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 41, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 177, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((main__loop_entered == 0) && (i == 0)) && (__tmp_155_0 == 0)) && (__return_136 == 0)) && (__return_main == 0)) || ((((((main__loop_entered == 0) && (__tmp_155_0 == 0)) && (((4294967295 + i) % 4294967296) <= 99999)) && (__return_136 == 0)) && (0 <= i)) && (__return_main == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:06:13,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ae1332-4ae4-4cf4-bf1d-d0a0b48ff495/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE