./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy8_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy8_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje --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 675f35e66fa59545cd4a52408711c9386973ccbbb0528c29e7af26cf7aa65f50 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:36:31,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:36:31,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:36:31,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:36:31,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:36:31,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:36:31,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:36:31,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:36:31,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:36:31,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:36:31,599 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:36:31,599 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:36:31,600 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:36:31,602 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:36:31,602 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:36:31,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:36:31,603 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:36:31,603 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:36:31,603 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:36:31,604 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:36:31,604 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:36:31,608 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:36:31,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:36:31,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:36:31,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:36:31,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:36:31,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:36:31,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:36:31,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:36:31,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:36:31,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:36:31,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:36:31,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:36:31,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:36:31,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:36:31,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:36:31,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:36:31,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:36:31,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:36:31,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:36:31,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:36:31,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:36:31,616 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:36:31,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:36:31,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:36:31,617 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_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675f35e66fa59545cd4a52408711c9386973ccbbb0528c29e7af26cf7aa65f50 [2024-11-09 05:36:31,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:36:31,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:36:31,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:36:31,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:36:31,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:36:31,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-examples/standard_copy8_ground-2.i Unable to find full path for "g++" [2024-11-09 05:36:33,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:36:34,081 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:36:34,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/sv-benchmarks/c/array-examples/standard_copy8_ground-2.i [2024-11-09 05:36:34,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/data/ccc17a192/ade0d6285e044ca0969c94e220499a4b/FLAG0888bb466 [2024-11-09 05:36:34,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/data/ccc17a192/ade0d6285e044ca0969c94e220499a4b [2024-11-09 05:36:34,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:36:34,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:36:34,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:36:34,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:36:34,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:36:34,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed8b863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34, skipping insertion in model container [2024-11-09 05:36:34,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:36:34,686 WARN L250 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_bc75dc72-2c3d-4f81-984e-49402ed289ca/sv-benchmarks/c/array-examples/standard_copy8_ground-2.i[816,829] [2024-11-09 05:36:34,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:36:34,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:36:34,743 WARN L250 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_bc75dc72-2c3d-4f81-984e-49402ed289ca/sv-benchmarks/c/array-examples/standard_copy8_ground-2.i[816,829] [2024-11-09 05:36:34,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:36:34,784 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:36:34,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34 WrapperNode [2024-11-09 05:36:34,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:36:34,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:36:34,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:36:34,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:36:34,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,831 INFO L138 Inliner]: procedures = 16, calls = 54, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 170 [2024-11-09 05:36:34,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:36:34,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:36:34,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:36:34,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:36:34,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:36:34,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:36:34,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:36:34,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:36:34,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (1/1) ... [2024-11-09 05:36:34,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:36:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:34,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:36:34,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:36:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:36:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:36:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:36:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:36:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:36:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:36:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:36:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:36:35,031 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:36:35,033 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:36:35,327 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-09 05:36:35,328 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:36:35,389 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:36:35,393 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:36:35,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:36:35 BoogieIcfgContainer [2024-11-09 05:36:35,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:36:35,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:36:35,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:36:35,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:36:35,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:36:34" (1/3) ... [2024-11-09 05:36:35,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca1e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:36:35, skipping insertion in model container [2024-11-09 05:36:35,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:36:34" (2/3) ... [2024-11-09 05:36:35,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca1e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:36:35, skipping insertion in model container [2024-11-09 05:36:35,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:36:35" (3/3) ... [2024-11-09 05:36:35,406 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-2.i [2024-11-09 05:36:35,427 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:36:35,428 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:36:35,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:36:35,545 INFO L333 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, 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;@5ea5684a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:36:35,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:36:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 35 states have internal predecessors, (56), 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) [2024-11-09 05:36:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 05:36:35,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:35,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:35,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:35,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1547710764, now seen corresponding path program 1 times [2024-11-09 05:36:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:35,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193655863] [2024-11-09 05:36:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:36:35,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:35,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193655863] [2024-11-09 05:36:35,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193655863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:35,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:36:35,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:36:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156109898] [2024-11-09 05:36:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:35,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:36:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:36:35,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:36:35,984 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 35 states have internal predecessors, (56), 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-09 05:36:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:36,059 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2024-11-09 05:36:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:36:36,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-11-09 05:36:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:36,070 INFO L225 Difference]: With dead ends: 71 [2024-11-09 05:36:36,070 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:36:36,073 INFO L431 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 [2024-11-09 05:36:36,079 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:36,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:36:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:36:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 05:36:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 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) [2024-11-09 05:36:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 54 transitions. [2024-11-09 05:36:36,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 54 transitions. Word has length 23 [2024-11-09 05:36:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:36,124 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 54 transitions. [2024-11-09 05:36:36,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-09 05:36:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 54 transitions. [2024-11-09 05:36:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:36:36,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:36,127 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:36,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:36:36,128 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:36,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 25350001, now seen corresponding path program 1 times [2024-11-09 05:36:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:36,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953087976] [2024-11-09 05:36:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:36,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:36:36,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953087976] [2024-11-09 05:36:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953087976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842006760] [2024-11-09 05:36:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:36,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:36,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:36,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:36:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:36,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:36:36,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:36:36,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:36:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842006760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:36:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 05:36:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713428113] [2024-11-09 05:36:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:36,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:36:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:36:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:36:36,563 INFO L87 Difference]: Start difference. First operand 36 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-11-09 05:36:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:36,717 INFO L93 Difference]: Finished difference Result 80 states and 128 transitions. [2024-11-09 05:36:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:36:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 25 [2024-11-09 05:36:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:36,719 INFO L225 Difference]: With dead ends: 80 [2024-11-09 05:36:36,720 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 05:36:36,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:36:36,721 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:36,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:36:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 05:36:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-09 05:36:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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) [2024-11-09 05:36:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2024-11-09 05:36:36,734 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 25 [2024-11-09 05:36:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:36,735 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2024-11-09 05:36:36,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-11-09 05:36:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2024-11-09 05:36:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 05:36:36,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:36,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:36,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:36:36,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:36,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:36,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1570728473, now seen corresponding path program 1 times [2024-11-09 05:36:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:36,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129305435] [2024-11-09 05:36:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:36:37,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129305435] [2024-11-09 05:36:37,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129305435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239018352] [2024-11-09 05:36:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:37,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:37,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:37,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:36:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:37,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:36:37,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:36:37,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:36:37,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239018352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:36:37,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072747700] [2024-11-09 05:36:37,431 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:36:37,431 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:36:37,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:36:37,446 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:36:37,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:36:40,420 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:36:41,741 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '683#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:36:41,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:36:41,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:36:41,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 05:36:41,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417705517] [2024-11-09 05:36:41,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:36:41,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:36:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:36:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:36:41,744 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-09 05:36:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:41,807 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-11-09 05:36:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:36:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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 41 [2024-11-09 05:36:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:41,808 INFO L225 Difference]: With dead ends: 104 [2024-11-09 05:36:41,808 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 05:36:41,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:36:41,810 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:41,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 189 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:36:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 05:36:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-09 05:36:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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) [2024-11-09 05:36:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-11-09 05:36:41,822 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 41 [2024-11-09 05:36:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:41,822 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-11-09 05:36:41,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-09 05:36:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-11-09 05:36:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:36:41,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:41,826 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:41,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:42,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:42,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:42,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash -832891032, now seen corresponding path program 2 times [2024-11-09 05:36:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:42,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871985030] [2024-11-09 05:36:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 05:36:42,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871985030] [2024-11-09 05:36:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871985030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:42,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546884792] [2024-11-09 05:36:42,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:36:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:42,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:42,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:36:42,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:36:42,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:36:42,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:36:42,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 05:36:42,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 05:36:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546884792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:36:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901985688] [2024-11-09 05:36:42,346 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:36:42,347 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:36:42,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:36:42,347 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:36:42,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:36:44,378 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:36:45,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1197#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:36:45,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:36:45,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:36:45,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 05:36:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882548123] [2024-11-09 05:36:45,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:36:45,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:36:45,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:36:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:36:45,291 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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) [2024-11-09 05:36:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:45,554 INFO L93 Difference]: Finished difference Result 139 states and 210 transitions. [2024-11-09 05:36:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:36:45,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 47 [2024-11-09 05:36:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:45,556 INFO L225 Difference]: With dead ends: 139 [2024-11-09 05:36:45,557 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 05:36:45,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:36:45,558 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:45,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 46 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:36:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 05:36:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-09 05:36:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 96 states have internal predecessors, (106), 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) [2024-11-09 05:36:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2024-11-09 05:36:45,573 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 47 [2024-11-09 05:36:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:45,574 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2024-11-09 05:36:45,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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) [2024-11-09 05:36:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2024-11-09 05:36:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 05:36:45,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:45,576 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:45,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:45,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:45,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:45,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1011535200, now seen corresponding path program 3 times [2024-11-09 05:36:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668485244] [2024-11-09 05:36:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:46,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668485244] [2024-11-09 05:36:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668485244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480983727] [2024-11-09 05:36:46,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:36:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:46,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:46,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:36:46,300 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:36:46,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:36:46,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:36:46,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:46,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480983727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:36:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691764243] [2024-11-09 05:36:46,397 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:36:46,398 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:36:46,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:36:46,398 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:36:46,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:36:48,026 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:36:49,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2125#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:36:49,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:36:49,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:36:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 05:36:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991171292] [2024-11-09 05:36:49,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:36:49,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:36:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:36:49,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:36:49,682 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 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) [2024-11-09 05:36:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:49,740 INFO L93 Difference]: Finished difference Result 196 states and 219 transitions. [2024-11-09 05:36:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:36:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 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 95 [2024-11-09 05:36:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:49,744 INFO L225 Difference]: With dead ends: 196 [2024-11-09 05:36:49,744 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 05:36:49,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 235 SyntacticMatches, 35 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:36:49,745 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:49,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 274 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:36:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 05:36:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-09 05:36:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0925925925925926) internal successors, (118), 108 states have internal predecessors, (118), 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) [2024-11-09 05:36:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2024-11-09 05:36:49,763 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 95 [2024-11-09 05:36:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:49,764 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2024-11-09 05:36:49,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 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) [2024-11-09 05:36:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2024-11-09 05:36:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 05:36:49,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:49,769 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:49,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:49,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:49,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:49,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1734852158, now seen corresponding path program 4 times [2024-11-09 05:36:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611078282] [2024-11-09 05:36:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:49,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:50,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611078282] [2024-11-09 05:36:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611078282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782257814] [2024-11-09 05:36:50,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:36:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:50,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:50,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:36:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:50,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:36:50,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:50,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782257814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:36:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1074610577] [2024-11-09 05:36:50,964 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:36:50,965 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:36:50,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:36:50,967 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:36:50,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:36:52,429 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:36:53,514 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3245#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:36:53,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:36:53,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:36:53,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-09 05:36:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317287911] [2024-11-09 05:36:53,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:36:53,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:36:53,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:36:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:36:53,517 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 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) [2024-11-09 05:36:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:53,619 INFO L93 Difference]: Finished difference Result 220 states and 249 transitions. [2024-11-09 05:36:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:36:53,620 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 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 107 [2024-11-09 05:36:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:53,621 INFO L225 Difference]: With dead ends: 220 [2024-11-09 05:36:53,621 INFO L226 Difference]: Without dead ends: 133 [2024-11-09 05:36:53,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 295 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:36:53,623 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:53,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:36:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-09 05:36:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-09 05:36:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0757575757575757) internal successors, (142), 132 states have internal predecessors, (142), 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) [2024-11-09 05:36:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2024-11-09 05:36:53,633 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 107 [2024-11-09 05:36:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:53,633 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2024-11-09 05:36:53,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 24 states have internal predecessors, (84), 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) [2024-11-09 05:36:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2024-11-09 05:36:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 05:36:53,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:53,636 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:36:53,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:53,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:36:53,837 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:53,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -177469190, now seen corresponding path program 5 times [2024-11-09 05:36:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067611404] [2024-11-09 05:36:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:36:54,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067611404] [2024-11-09 05:36:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067611404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611634074] [2024-11-09 05:36:55,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:36:55,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:55,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:55,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:36:56,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:36:56,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:36:56,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:36:56,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-09 05:36:56,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:36:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-09 05:36:56,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611634074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:36:56,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757956866] [2024-11-09 05:36:56,484 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:36:56,485 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:36:56,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:36:56,488 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:36:56,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:36:57,714 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:36:59,842 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4591#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:36:59,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:36:59,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:36:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-09 05:36:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796927453] [2024-11-09 05:36:59,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:36:59,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 05:36:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 05:36:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 05:36:59,845 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 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) [2024-11-09 05:37:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:00,395 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2024-11-09 05:37:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 05:37:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 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 131 [2024-11-09 05:37:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:00,398 INFO L225 Difference]: With dead ends: 319 [2024-11-09 05:37:00,398 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 05:37:00,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 351 SyntacticMatches, 22 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 05:37:00,403 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 192 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:00,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 109 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:37:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 05:37:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2024-11-09 05:37:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0434782608695652) internal successors, (240), 230 states have internal predecessors, (240), 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) [2024-11-09 05:37:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 240 transitions. [2024-11-09 05:37:00,418 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 240 transitions. Word has length 131 [2024-11-09 05:37:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:00,418 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 240 transitions. [2024-11-09 05:37:00,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 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) [2024-11-09 05:37:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 240 transitions. [2024-11-09 05:37:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-09 05:37:00,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:00,423 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:00,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:37:00,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:00,623 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:00,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1974162351, now seen corresponding path program 6 times [2024-11-09 05:37:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216231109] [2024-11-09 05:37:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:02,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216231109] [2024-11-09 05:37:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216231109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316336650] [2024-11-09 05:37:02,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:37:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:02,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:02,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:37:02,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:37:02,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:37:02,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:37:02,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:02,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316336650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:37:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044136505] [2024-11-09 05:37:03,730 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:37:03,730 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:37:03,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:37:03,731 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:37:03,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:37:05,167 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:37:08,232 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6835#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:37:08,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:37:08,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:37:08,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 05:37:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145415042] [2024-11-09 05:37:08,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:37:08,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 05:37:08,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 05:37:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=2164, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:37:08,237 INFO L87 Difference]: Start difference. First operand 231 states and 240 transitions. Second operand has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 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) [2024-11-09 05:37:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:08,460 INFO L93 Difference]: Finished difference Result 464 states and 506 transitions. [2024-11-09 05:37:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 05:37:08,461 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 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 229 [2024-11-09 05:37:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:08,463 INFO L225 Difference]: With dead ends: 464 [2024-11-09 05:37:08,463 INFO L226 Difference]: Without dead ends: 281 [2024-11-09 05:37:08,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 611 SyntacticMatches, 42 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3756 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1258, Invalid=2164, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:37:08,465 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:08,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:37:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-09 05:37:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-09 05:37:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0357142857142858) internal successors, (290), 280 states have internal predecessors, (290), 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) [2024-11-09 05:37:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 290 transitions. [2024-11-09 05:37:08,483 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 290 transitions. Word has length 229 [2024-11-09 05:37:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:08,483 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 290 transitions. [2024-11-09 05:37:08,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.66) internal successors, (133), 49 states have internal predecessors, (133), 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) [2024-11-09 05:37:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 290 transitions. [2024-11-09 05:37:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-09 05:37:08,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:08,489 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:08,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:37:08,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:08,690 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:08,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash -651674964, now seen corresponding path program 7 times [2024-11-09 05:37:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034459025] [2024-11-09 05:37:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:12,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034459025] [2024-11-09 05:37:12,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034459025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848866850] [2024-11-09 05:37:12,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:37:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:12,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:12,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:37:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:13,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:37:13,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:37:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:13,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:37:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848866850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:37:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665497739] [2024-11-09 05:37:16,791 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:37:16,791 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:37:16,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:37:16,791 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:37:16,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:37:17,823 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:37:24,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9723#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:37:24,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:37:24,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:37:24,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2024-11-09 05:37:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797241736] [2024-11-09 05:37:24,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:37:24,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 05:37:24,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:37:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 05:37:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5083, Invalid=6907, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 05:37:24,458 INFO L87 Difference]: Start difference. First operand 281 states and 290 transitions. Second operand has 101 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 100 states have internal predecessors, (236), 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) [2024-11-09 05:37:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:37:24,905 INFO L93 Difference]: Finished difference Result 564 states and 631 transitions. [2024-11-09 05:37:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 05:37:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 100 states have internal predecessors, (236), 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 279 [2024-11-09 05:37:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:37:24,908 INFO L225 Difference]: With dead ends: 564 [2024-11-09 05:37:24,908 INFO L226 Difference]: Without dead ends: 381 [2024-11-09 05:37:24,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 694 SyntacticMatches, 83 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14066 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=5083, Invalid=6907, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 05:37:24,912 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:37:24,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 313 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:37:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-09 05:37:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-09 05:37:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.0263157894736843) internal successors, (390), 380 states have internal predecessors, (390), 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) [2024-11-09 05:37:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 390 transitions. [2024-11-09 05:37:24,949 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 390 transitions. Word has length 279 [2024-11-09 05:37:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:37:24,949 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 390 transitions. [2024-11-09 05:37:24,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 100 states have internal predecessors, (236), 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) [2024-11-09 05:37:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 390 transitions. [2024-11-09 05:37:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-09 05:37:24,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:37:24,957 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:37:24,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:37:25,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:25,158 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:37:25,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:37:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1045925094, now seen corresponding path program 8 times [2024-11-09 05:37:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:37:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492762860] [2024-11-09 05:37:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:37:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:37:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:37:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 05:37:34,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:37:34,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492762860] [2024-11-09 05:37:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492762860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:37:34,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948309541] [2024-11-09 05:37:34,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:37:34,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:37:34,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:37:34,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:37:34,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:38:12,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 05:38:12,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:38:12,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:38:12,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:38:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10304 trivial. 0 not checked. [2024-11-09 05:38:13,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:38:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10304 trivial. 0 not checked. [2024-11-09 05:38:13,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948309541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:38:13,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646633914] [2024-11-09 05:38:13,902 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:38:13,902 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:38:13,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:38:13,902 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:38:13,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:38:15,087 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:38:26,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13533#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:38:26,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:38:26,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:38:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2024-11-09 05:38:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403626205] [2024-11-09 05:38:26,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:38:26,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-09 05:38:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:38:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-09 05:38:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=11934, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 05:38:26,390 INFO L87 Difference]: Start difference. First operand 381 states and 390 transitions. Second operand has 123 states, 123 states have (on average 2.3333333333333335) internal successors, (287), 123 states have internal predecessors, (287), 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) [2024-11-09 05:38:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:38:27,654 INFO L93 Difference]: Finished difference Result 759 states and 873 transitions. [2024-11-09 05:38:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-09 05:38:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.3333333333333335) internal successors, (287), 123 states have internal predecessors, (287), 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 379 [2024-11-09 05:38:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:38:27,660 INFO L225 Difference]: With dead ends: 759 [2024-11-09 05:38:27,660 INFO L226 Difference]: Without dead ends: 576 [2024-11-09 05:38:27,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1043 SyntacticMatches, 62 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11549 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=5358, Invalid=11934, Unknown=0, NotChecked=0, Total=17292 [2024-11-09 05:38:27,665 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 381 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:38:27,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 225 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:38:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-09 05:38:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 575. [2024-11-09 05:38:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.0174216027874565) internal successors, (584), 574 states have internal predecessors, (584), 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) [2024-11-09 05:38:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 584 transitions. [2024-11-09 05:38:27,686 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 584 transitions. Word has length 379 [2024-11-09 05:38:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:38:27,687 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 584 transitions. [2024-11-09 05:38:27,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.3333333333333335) internal successors, (287), 123 states have internal predecessors, (287), 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) [2024-11-09 05:38:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 584 transitions. [2024-11-09 05:38:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-09 05:38:27,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:38:27,703 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:38:27,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:38:27,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:38:27,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:38:27,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:38:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash -567356277, now seen corresponding path program 9 times [2024-11-09 05:38:27,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:38:27,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868132349] [2024-11-09 05:38:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:38:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:38:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:38:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13673 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:38:38,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:38:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868132349] [2024-11-09 05:38:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868132349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:38:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565846437] [2024-11-09 05:38:38,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:38:38,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:38:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:38:38,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:38:38,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:38:39,807 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:38:39,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:38:39,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 3044 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 05:38:39,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:38:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13673 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:38:40,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:38:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13673 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:38:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565846437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:38:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616671786] [2024-11-09 05:38:52,937 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:38:52,937 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:38:52,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:38:52,937 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:38:52,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:38:54,247 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:39:08,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19170#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:39:08,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:39:08,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:39:08,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2024-11-09 05:39:08,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527459243] [2024-11-09 05:39:08,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:39:08,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-09 05:39:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-09 05:39:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20536, Invalid=24196, Unknown=0, NotChecked=0, Total=44732 [2024-11-09 05:39:08,813 INFO L87 Difference]: Start difference. First operand 575 states and 584 transitions. Second operand has 203 states, 203 states have (on average 2.167487684729064) internal successors, (440), 202 states have internal predecessors, (440), 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) [2024-11-09 05:39:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:10,096 INFO L93 Difference]: Finished difference Result 1152 states and 1270 transitions. [2024-11-09 05:39:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-09 05:39:10,097 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.167487684729064) internal successors, (440), 202 states have internal predecessors, (440), 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 573 [2024-11-09 05:39:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:10,101 INFO L225 Difference]: With dead ends: 1152 [2024-11-09 05:39:10,101 INFO L226 Difference]: Without dead ends: 777 [2024-11-09 05:39:10,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1818 GetRequests, 1496 SyntacticMatches, 112 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37162 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=20536, Invalid=24196, Unknown=0, NotChecked=0, Total=44732 [2024-11-09 05:39:10,107 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:10,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:39:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-09 05:39:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2024-11-09 05:39:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 776 states have (on average 1.0128865979381443) internal successors, (786), 776 states have internal predecessors, (786), 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) [2024-11-09 05:39:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 786 transitions. [2024-11-09 05:39:10,133 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 786 transitions. Word has length 573 [2024-11-09 05:39:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:10,134 INFO L471 AbstractCegarLoop]: Abstraction has 777 states and 786 transitions. [2024-11-09 05:39:10,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.167487684729064) internal successors, (440), 202 states have internal predecessors, (440), 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) [2024-11-09 05:39:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 786 transitions. [2024-11-09 05:39:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2024-11-09 05:39:10,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:10,141 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:10,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:39:10,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:10,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:39:10,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -804842876, now seen corresponding path program 10 times [2024-11-09 05:39:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473754983] [2024-11-09 05:39:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43872 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:39:47,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473754983] [2024-11-09 05:39:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473754983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:39:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000241072] [2024-11-09 05:39:47,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:39:47,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:39:47,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:47,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:39:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:39:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:49,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 4559 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-09 05:39:49,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:39:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 43872 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:39:50,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43872 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:40:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000241072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:40:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705123999] [2024-11-09 05:40:40,929 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-09 05:40:40,930 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:40:40,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:40:40,930 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:40:40,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:40:41,862 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:41:25,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27114#(and (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#a8~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a5~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a3~0#1.base|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a1~0#1.base|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a4~0#1.base|) (<= 2 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) 0) (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) 0))) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2024-11-09 05:41:25,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:41:25,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:41:25,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2024-11-09 05:41:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849227496] [2024-11-09 05:41:25,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:41:25,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2024-11-09 05:41:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2024-11-09 05:41:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81843, Invalid=89139, Unknown=0, NotChecked=0, Total=170982 [2024-11-09 05:41:25,232 INFO L87 Difference]: Start difference. First operand 777 states and 786 transitions. Second operand has 405 states, 405 states have (on average 2.083950617283951) internal successors, (844), 404 states have internal predecessors, (844), 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) [2024-11-09 05:41:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:29,759 INFO L93 Difference]: Finished difference Result 1556 states and 1775 transitions. [2024-11-09 05:41:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2024-11-09 05:41:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 2.083950617283951) internal successors, (844), 404 states have internal predecessors, (844), 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 775 [2024-11-09 05:41:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:29,765 INFO L225 Difference]: With dead ends: 1556 [2024-11-09 05:41:29,766 INFO L226 Difference]: Without dead ends: 1181 [2024-11-09 05:41:29,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2525 GetRequests, 1978 SyntacticMatches, 135 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88190 ImplicationChecksByTransitivity, 110.0s TimeCoverageRelationStatistics Valid=81843, Invalid=89139, Unknown=0, NotChecked=0, Total=170982 [2024-11-09 05:41:29,777 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:29,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:41:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-11-09 05:41:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2024-11-09 05:41:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 1.0084745762711864) internal successors, (1190), 1180 states have internal predecessors, (1190), 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) [2024-11-09 05:41:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1190 transitions. [2024-11-09 05:41:29,815 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1190 transitions. Word has length 775 [2024-11-09 05:41:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:29,815 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1190 transitions. [2024-11-09 05:41:29,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 2.083950617283951) internal successors, (844), 404 states have internal predecessors, (844), 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) [2024-11-09 05:41:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1190 transitions. [2024-11-09 05:41:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2024-11-09 05:41:29,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:29,830 INFO L215 NwaCegarLoop]: trace histogram [402, 402, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:29,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:30,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:30,030 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:30,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1474227382, now seen corresponding path program 11 times [2024-11-09 05:41:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623950384] [2024-11-09 05:41:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:44:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 165476 backedges. 0 proven. 161604 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-09 05:44:01,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:44:01,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623950384] [2024-11-09 05:44:01,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623950384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:44:01,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026407621] [2024-11-09 05:44:01,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:44:01,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:44:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:44:01,768 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:44:01,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc75dc72-2c3d-4f81-984e-49402ed289ca/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process