./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/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_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/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_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:57:03,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:57:04,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:57:04,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:57:04,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:57:04,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:57:04,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:57:04,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:57:04,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:57:04,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:57:04,071 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:57:04,072 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:57:04,072 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:57:04,073 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:57:04,075 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:57:04,076 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:57:04,076 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:57:04,077 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:57:04,077 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:57:04,078 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:57:04,078 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:57:04,083 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:57:04,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:57:04,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:57:04,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:57:04,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:57:04,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:57:04,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:57:04,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:57:04,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:57:04,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:57:04,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:57:04,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:57:04,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:57:04,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:57:04,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:57:04,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:57:04,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:57:04,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:57:04,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:57:04,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:57:04,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:57:04,093 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:57:04,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:57:04,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:57:04,095 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:57:04,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:57:04,096 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_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2024-11-09 05:57:04,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:57:04,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:57:04,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:57:04,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:57:04,451 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:57:04,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-lit/gj2007.i Unable to find full path for "g++" [2024-11-09 05:57:06,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:57:06,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:57:06,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/sv-benchmarks/c/loop-lit/gj2007.i [2024-11-09 05:57:06,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/data/2fe3ad4a3/88629772a7b34de8be79615a6dbbb7fa/FLAG257061346 [2024-11-09 05:57:06,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/data/2fe3ad4a3/88629772a7b34de8be79615a6dbbb7fa [2024-11-09 05:57:06,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:57:06,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:57:06,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:06,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:57:06,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:57:06,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:06" (1/1) ... [2024-11-09 05:57:06,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d213ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:06, skipping insertion in model container [2024-11-09 05:57:06,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:06" (1/1) ... [2024-11-09 05:57:06,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:57:07,081 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_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2024-11-09 05:57:07,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:07,108 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:57:07,122 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_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2024-11-09 05:57:07,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:07,147 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:57:07,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07 WrapperNode [2024-11-09 05:57:07,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:07,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:07,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:57:07,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:57:07,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,181 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2024-11-09 05:57:07,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:07,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:57:07,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:57:07,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:57:07,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:57:07,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:57:07,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:57:07,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:57:07,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (1/1) ... [2024-11-09 05:57:07,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:57:07,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:07,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:57:07,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:57:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:57:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:57:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:57:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:57:07,351 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:57:07,353 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:57:07,465 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 05:57:07,465 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:57:07,504 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:57:07,504 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:57:07,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:57:07 BoogieIcfgContainer [2024-11-09 05:57:07,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:57:07,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:57:07,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:57:07,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:57:07,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:57:06" (1/3) ... [2024-11-09 05:57:07,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a3d289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:57:07, skipping insertion in model container [2024-11-09 05:57:07,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:07" (2/3) ... [2024-11-09 05:57:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a3d289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:57:07, skipping insertion in model container [2024-11-09 05:57:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:57:07" (3/3) ... [2024-11-09 05:57:07,517 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.i [2024-11-09 05:57:07,536 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:57:07,537 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:57:07,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:57:07,609 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;@5c7870c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:57:07,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:57:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:57:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:57:07,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:07,624 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:57:07,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:07,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 63386408, now seen corresponding path program 1 times [2024-11-09 05:57:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208885263] [2024-11-09 05:57:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:07,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:07,834 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 05:57:07,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208885263] [2024-11-09 05:57:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208885263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:57:07,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:57:07,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:57:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436927066] [2024-11-09 05:57:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:57:07,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:57:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:57:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:57:07,883 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:57:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:07,928 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-09 05:57:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:57:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 05:57:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:07,938 INFO L225 Difference]: With dead ends: 17 [2024-11-09 05:57:07,938 INFO L226 Difference]: Without dead ends: 9 [2024-11-09 05:57:07,940 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 05:57:07,944 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:07,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:57:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-09 05:57:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-09 05:57:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:57:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-09 05:57:07,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2024-11-09 05:57:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:07,995 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-09 05:57:07,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:57:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-09 05:57:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:57:07,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:07,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:57:07,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:57:07,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:07,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash 430010890, now seen corresponding path program 1 times [2024-11-09 05:57:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546888157] [2024-11-09 05:57:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:08,192 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 05:57:08,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:08,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546888157] [2024-11-09 05:57:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546888157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986404213] [2024-11-09 05:57:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:08,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:08,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:08,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:08,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:57:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:08,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:57:08,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:08,329 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 05:57:08,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:08,512 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 05:57:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986404213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2093861366] [2024-11-09 05:57:08,549 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:08,549 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:08,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:08,560 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:08,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:09,022 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:09,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '90#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_28| Int) (|v_ULTIMATE.start_main_~x~0#1_29| Int) (|v_ULTIMATE.start_main_~y~0#1_23| Int) (|v_ULTIMATE.start_main_~y~0#1_22| Int)) (and (<= 100 |v_ULTIMATE.start_main_~x~0#1_29|) (not (= |v_ULTIMATE.start_main_~y~0#1_23| 100)) (<= |v_ULTIMATE.start_main_~x~0#1_28| 99) (= |v_ULTIMATE.start_main_~x~0#1_29| (+ |v_ULTIMATE.start_main_~x~0#1_28| 1)) (= (+ |v_ULTIMATE.start_main_~y~0#1_22| 1) |v_ULTIMATE.start_main_~y~0#1_23|))))' at error location [2024-11-09 05:57:09,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:09,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:57:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742347824] [2024-11-09 05:57:09,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:09,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:57:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:57:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:57:09,334 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 05:57:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:09,385 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-09 05:57:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:57:09,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:57:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:09,387 INFO L225 Difference]: With dead ends: 18 [2024-11-09 05:57:09,387 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 05:57:09,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:57:09,390 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:09,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:57:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 05:57:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 05:57:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 05:57:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-11-09 05:57:09,398 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-11-09 05:57:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:09,399 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-11-09 05:57:09,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 05:57:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-11-09 05:57:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:57:09,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:09,400 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 05:57:09,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:57:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:09,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:09,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1893174192, now seen corresponding path program 2 times [2024-11-09 05:57:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:09,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640886929] [2024-11-09 05:57:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:09,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640886929] [2024-11-09 05:57:09,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640886929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687080028] [2024-11-09 05:57:09,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:57:09,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:09,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:09,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:57:10,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:57:10,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:57:10,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:57:10,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:10,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687080028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917211413] [2024-11-09 05:57:10,314 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:10,314 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:10,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:10,316 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:10,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:10,575 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:10,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '221#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_35| Int) (|v_ULTIMATE.start_main_~y~0#1_36| Int) (|v_ULTIMATE.start_main_~x~0#1_42| Int) (|v_ULTIMATE.start_main_~x~0#1_43| Int)) (and (= (+ |v_ULTIMATE.start_main_~x~0#1_42| 1) |v_ULTIMATE.start_main_~x~0#1_43|) (<= 100 |v_ULTIMATE.start_main_~x~0#1_43|) (= (+ |v_ULTIMATE.start_main_~y~0#1_35| 1) |v_ULTIMATE.start_main_~y~0#1_36|) (not (= |v_ULTIMATE.start_main_~y~0#1_36| 100)) (<= |v_ULTIMATE.start_main_~x~0#1_42| 99))))' at error location [2024-11-09 05:57:10,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:10,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 05:57:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065086] [2024-11-09 05:57:10,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:10,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:57:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:57:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:57:10,848 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 05:57:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:10,916 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 05:57:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:57:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 13 [2024-11-09 05:57:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:10,918 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:57:10,918 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:57:10,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:57:10,920 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:10,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:57:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:57:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 05:57:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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 05:57:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-11-09 05:57:10,927 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-11-09 05:57:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:10,927 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-11-09 05:57:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 05:57:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-11-09 05:57:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:57:10,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:10,928 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 05:57:10,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:57:11,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 05:57:11,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:11,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2070946172, now seen corresponding path program 3 times [2024-11-09 05:57:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110107593] [2024-11-09 05:57:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:11,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110107593] [2024-11-09 05:57:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110107593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474655801] [2024-11-09 05:57:11,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:57:11,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:11,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:11,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:11,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:57:11,765 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:57:11,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:57:11,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:57:11,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:11,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:12,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474655801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1495837523] [2024-11-09 05:57:12,376 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:12,376 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:12,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:12,378 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:12,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:12,517 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:12,766 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '472#(and (exists ((|v_ULTIMATE.start_main_~x~0#1_68| Int) (|v_ULTIMATE.start_main_~x~0#1_69| Int) (|v_ULTIMATE.start_main_~y~0#1_60| Int) (|v_ULTIMATE.start_main_~y~0#1_61| Int)) (and (<= |v_ULTIMATE.start_main_~x~0#1_68| 99) (= (+ |v_ULTIMATE.start_main_~y~0#1_60| 1) |v_ULTIMATE.start_main_~y~0#1_61|) (not (= |v_ULTIMATE.start_main_~y~0#1_61| 100)) (= |v_ULTIMATE.start_main_~x~0#1_69| (+ |v_ULTIMATE.start_main_~x~0#1_68| 1)) (<= 100 |v_ULTIMATE.start_main_~x~0#1_69|))) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 05:57:12,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:12,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:12,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-09 05:57:12,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758782692] [2024-11-09 05:57:12,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:12,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:57:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:57:12,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:57:12,770 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 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 05:57:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:12,874 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-09 05:57:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:57:12,874 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 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 05:57:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:12,875 INFO L225 Difference]: With dead ends: 54 [2024-11-09 05:57:12,875 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 05:57:12,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:57:12,877 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 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 05:57:12,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:57:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 05:57:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 05:57:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 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 05:57:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2024-11-09 05:57:12,885 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2024-11-09 05:57:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:12,885 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2024-11-09 05:57:12,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 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 05:57:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2024-11-09 05:57:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 05:57:12,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:12,887 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 05:57:12,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:57:13,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 05:57:13,092 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:13,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash -350136556, now seen corresponding path program 4 times [2024-11-09 05:57:13,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:13,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706163712] [2024-11-09 05:57:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:14,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706163712] [2024-11-09 05:57:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706163712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:14,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31692763] [2024-11-09 05:57:14,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:57:14,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:14,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:14,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:14,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:57:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:14,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:57:14,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:14,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31692763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759277807] [2024-11-09 05:57:16,389 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:16,389 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:16,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:16,390 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:16,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:16,513 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:16,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '963#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_109| Int) (|v_ULTIMATE.start_main_~x~0#1_119| Int) (|v_ULTIMATE.start_main_~x~0#1_118| Int) (|v_ULTIMATE.start_main_~y~0#1_110| Int)) (and (= |v_ULTIMATE.start_main_~y~0#1_110| (+ |v_ULTIMATE.start_main_~y~0#1_109| 1)) (<= |v_ULTIMATE.start_main_~x~0#1_118| 99) (not (= |v_ULTIMATE.start_main_~y~0#1_110| 100)) (= (+ |v_ULTIMATE.start_main_~x~0#1_118| 1) |v_ULTIMATE.start_main_~x~0#1_119|) (<= 100 |v_ULTIMATE.start_main_~x~0#1_119|))))' at error location [2024-11-09 05:57:16,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:16,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-09 05:57:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879320019] [2024-11-09 05:57:16,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:16,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 05:57:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 05:57:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=1566, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:57:16,873 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 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 05:57:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:17,141 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2024-11-09 05:57:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 05:57:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 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 49 [2024-11-09 05:57:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:17,144 INFO L225 Difference]: With dead ends: 102 [2024-11-09 05:57:17,144 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 05:57:17,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1190, Invalid=1566, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:57:17,147 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:17,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:57:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 05:57:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 05:57:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 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 05:57:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2024-11-09 05:57:17,160 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 49 [2024-11-09 05:57:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:17,161 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2024-11-09 05:57:17,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 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 05:57:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2024-11-09 05:57:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 05:57:17,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:17,164 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 05:57:17,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:57:17,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:17,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:17,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 884468292, now seen corresponding path program 5 times [2024-11-09 05:57:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:17,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891766953] [2024-11-09 05:57:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:22,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891766953] [2024-11-09 05:57:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891766953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098483195] [2024-11-09 05:57:22,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:57:22,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:22,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:22,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:57:22,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 05:57:22,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:57:22,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:57:22,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:22,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098483195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157296496] [2024-11-09 05:57:26,668 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:26,668 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:26,669 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:26,669 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:26,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:26,755 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:27,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1934#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_216| Int) (|v_ULTIMATE.start_main_~y~0#1_206| Int) (|v_ULTIMATE.start_main_~y~0#1_207| Int) (|v_ULTIMATE.start_main_~x~0#1_217| Int)) (and (= |v_ULTIMATE.start_main_~y~0#1_207| (+ |v_ULTIMATE.start_main_~y~0#1_206| 1)) (<= 100 |v_ULTIMATE.start_main_~x~0#1_217|) (<= |v_ULTIMATE.start_main_~x~0#1_216| 99) (= |v_ULTIMATE.start_main_~x~0#1_217| (+ |v_ULTIMATE.start_main_~x~0#1_216| 1)) (not (= |v_ULTIMATE.start_main_~y~0#1_207| 100)))))' at error location [2024-11-09 05:57:27,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:27,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:27,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2024-11-09 05:57:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883079497] [2024-11-09 05:57:27,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:27,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 05:57:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 05:57:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4670, Invalid=5430, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 05:57:27,177 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 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 05:57:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:27,703 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2024-11-09 05:57:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 05:57:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 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 97 [2024-11-09 05:57:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:27,706 INFO L225 Difference]: With dead ends: 198 [2024-11-09 05:57:27,706 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 05:57:27,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4670, Invalid=5430, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 05:57:27,711 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:27,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:57:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 05:57:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-09 05:57:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 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 05:57:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2024-11-09 05:57:27,728 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 97 [2024-11-09 05:57:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:27,728 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2024-11-09 05:57:27,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 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 05:57:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2024-11-09 05:57:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 05:57:27,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:27,736 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2024-11-09 05:57:27,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:57:27,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:57:27,937 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:27,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1906986844, now seen corresponding path program 6 times [2024-11-09 05:57:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:27,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288842416] [2024-11-09 05:57:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:41,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:41,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288842416] [2024-11-09 05:57:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288842416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:41,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991554244] [2024-11-09 05:57:41,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:57:41,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:41,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:41,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:41,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:57:41,389 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:57:41,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:57:41,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 05:57:41,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:41,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:57:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991554244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:57:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166351496] [2024-11-09 05:57:53,248 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:57:53,249 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:57:53,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:57:53,249 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:57:53,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:57:53,349 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:57:54,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3864#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_410| Int) (|v_ULTIMATE.start_main_~x~0#1_411| Int) (|v_ULTIMATE.start_main_~y~0#1_399| Int) (|v_ULTIMATE.start_main_~y~0#1_400| Int)) (and (<= 100 |v_ULTIMATE.start_main_~x~0#1_411|) (= |v_ULTIMATE.start_main_~y~0#1_400| (+ |v_ULTIMATE.start_main_~y~0#1_399| 1)) (not (= |v_ULTIMATE.start_main_~y~0#1_400| 100)) (= (+ |v_ULTIMATE.start_main_~x~0#1_410| 1) |v_ULTIMATE.start_main_~x~0#1_411|) (<= |v_ULTIMATE.start_main_~x~0#1_410| 99))))' at error location [2024-11-09 05:57:54,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:57:54,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:57:54,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2024-11-09 05:57:54,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107015261] [2024-11-09 05:57:54,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:57:54,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-09 05:57:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:57:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-09 05:57:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9880, Invalid=28340, Unknown=0, NotChecked=0, Total=38220 [2024-11-09 05:57:54,442 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 192 states, 192 states have (on average 2.0052083333333335) internal successors, (385), 191 states have internal predecessors, (385), 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 05:57:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:59,003 INFO L93 Difference]: Finished difference Result 210 states and 215 transitions. [2024-11-09 05:57:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-09 05:57:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 2.0052083333333335) internal successors, (385), 191 states have internal predecessors, (385), 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 193 [2024-11-09 05:57:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:59,006 INFO L225 Difference]: With dead ends: 210 [2024-11-09 05:57:59,006 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 05:57:59,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 477 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5862 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=9880, Invalid=28340, Unknown=0, NotChecked=0, Total=38220 [2024-11-09 05:57:59,011 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:59,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 10435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10434 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 05:57:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 05:57:59,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-09 05:57:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 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 05:57:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2024-11-09 05:57:59,030 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 193 [2024-11-09 05:57:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:59,031 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2024-11-09 05:57:59,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 2.0052083333333335) internal successors, (385), 191 states have internal predecessors, (385), 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 05:57:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2024-11-09 05:57:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-09 05:57:59,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:59,034 INFO L215 NwaCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1] [2024-11-09 05:57:59,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:57:59,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:57:59,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:59,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 230324336, now seen corresponding path program 7 times [2024-11-09 05:57:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:59,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898509100] [2024-11-09 05:57:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:58:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:58:17,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:58:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898509100] [2024-11-09 05:58:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898509100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:58:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650203289] [2024-11-09 05:58:17,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:58:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:58:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:58:17,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:58:17,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e81f98b-412d-4e40-86cd-8e2e7e7b81cf/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:58:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:58:17,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-09 05:58:17,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:58:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:58:23,331 INFO L311 TraceCheckSpWp]: Computing backward predicates...