./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16921798414ec528dd37161230657dad4883a0777e5a6c6f07453756efda755c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:09,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:09,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:14:09,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:09,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:09,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:09,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:09,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:09,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:09,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:09,595 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:09,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:09,596 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:09,598 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:09,598 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:09,599 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:09,599 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:09,600 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:09,600 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:09,601 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:09,601 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:09,602 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:09,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:09,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:09,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:14:09,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:09,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:14:09,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:09,605 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:09,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:09,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:09,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:14:09,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:09,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:09,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:09,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:09,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:09,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:09,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:09,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:09,609 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:09,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:09,610 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:09,610 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:09,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:09,611 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_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16921798414ec528dd37161230657dad4883a0777e5a6c6f07453756efda755c [2023-11-19 05:14:09,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:09,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:09,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:09,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:09,922 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:09,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2023-11-19 05:14:12,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:13,342 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:13,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2023-11-19 05:14:13,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/data/f3215b716/953699be84694ea58101009e46eb8666/FLAG1cb967f95 [2023-11-19 05:14:13,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/data/f3215b716/953699be84694ea58101009e46eb8666 [2023-11-19 05:14:13,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:13,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:13,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:13,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:13,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:13,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:13" (1/1) ... [2023-11-19 05:14:13,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e8ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:13, skipping insertion in model container [2023-11-19 05:14:13,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:13" (1/1) ... [2023-11-19 05:14:13,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:13,840 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2023-11-19 05:14:13,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:13,878 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:13,992 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2023-11-19 05:14:14,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:14,038 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:14,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14 WrapperNode [2023-11-19 05:14:14,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:14,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:14,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:14,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:14,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,119 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2023-11-19 05:14:14,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:14,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:14,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:14,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:14,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:14,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:14,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:14,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:14,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (1/1) ... [2023-11-19 05:14:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:14,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:14,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:14,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:14:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:14,367 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:14,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:15,435 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:15,813 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:15,814 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:14:15,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:15 BoogieIcfgContainer [2023-11-19 05:14:15,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:15,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:15,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:15,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:15,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:13" (1/3) ... [2023-11-19 05:14:15,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331a68ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:15, skipping insertion in model container [2023-11-19 05:14:15,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:14" (2/3) ... [2023-11-19 05:14:15,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331a68ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:15, skipping insertion in model container [2023-11-19 05:14:15,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:15" (3/3) ... [2023-11-19 05:14:15,828 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2023-11-19 05:14:15,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:15,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:14:15,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:15,905 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ff9a050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:15,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:14:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:14:15,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:15,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:15,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:15,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1243333366, now seen corresponding path program 1 times [2023-11-19 05:14:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:15,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409885282] [2023-11-19 05:14:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:16,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409885282] [2023-11-19 05:14:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409885282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:16,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027577957] [2023-11-19 05:14:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:16,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:16,562 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:17,020 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2023-11-19 05:14:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:17,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2023-11-19 05:14:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:17,033 INFO L225 Difference]: With dead ends: 251 [2023-11-19 05:14:17,034 INFO L226 Difference]: Without dead ends: 163 [2023-11-19 05:14:17,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:17,040 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:17,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:14:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-19 05:14:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-19 05:14:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.7777777777777777) internal successors, (288), 162 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2023-11-19 05:14:17,093 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2023-11-19 05:14:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:17,094 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2023-11-19 05:14:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2023-11-19 05:14:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 05:14:17,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:17,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:14:17,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:17,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash 726159637, now seen corresponding path program 1 times [2023-11-19 05:14:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716816228] [2023-11-19 05:14:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:17,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:17,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716816228] [2023-11-19 05:14:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716816228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:17,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:17,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52246727] [2023-11-19 05:14:17,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:17,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:17,312 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2023-11-19 05:14:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:17,712 INFO L93 Difference]: Finished difference Result 487 states and 862 transitions. [2023-11-19 05:14:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 98 [2023-11-19 05:14:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:17,720 INFO L225 Difference]: With dead ends: 487 [2023-11-19 05:14:17,720 INFO L226 Difference]: Without dead ends: 325 [2023-11-19 05:14:17,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:17,729 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 52 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:14:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-19 05:14:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2023-11-19 05:14:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.704968944099379) internal successors, (549), 322 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 549 transitions. [2023-11-19 05:14:17,763 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 549 transitions. Word has length 98 [2023-11-19 05:14:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:17,763 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 549 transitions. [2023-11-19 05:14:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2023-11-19 05:14:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 549 transitions. [2023-11-19 05:14:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 05:14:17,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:17,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:14:17,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:17,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1167851045, now seen corresponding path program 1 times [2023-11-19 05:14:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184744846] [2023-11-19 05:14:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:17,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184744846] [2023-11-19 05:14:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184744846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:17,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:17,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586965528] [2023-11-19 05:14:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:17,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:17,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:17,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:17,933 INFO L87 Difference]: Start difference. First operand 323 states and 549 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:18,143 INFO L93 Difference]: Finished difference Result 645 states and 1097 transitions. [2023-11-19 05:14:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:18,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2023-11-19 05:14:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:18,146 INFO L225 Difference]: With dead ends: 645 [2023-11-19 05:14:18,146 INFO L226 Difference]: Without dead ends: 323 [2023-11-19 05:14:18,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:18,149 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:18,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 4 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-19 05:14:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-19 05:14:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5186335403726707) internal successors, (489), 322 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 489 transitions. [2023-11-19 05:14:18,185 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 489 transitions. Word has length 99 [2023-11-19 05:14:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:18,185 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 489 transitions. [2023-11-19 05:14:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 489 transitions. [2023-11-19 05:14:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 05:14:18,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:18,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:14:18,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:18,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 65854922, now seen corresponding path program 1 times [2023-11-19 05:14:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862271169] [2023-11-19 05:14:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 05:14:18,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862271169] [2023-11-19 05:14:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862271169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:18,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986932114] [2023-11-19 05:14:18,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:18,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:18,539 INFO L87 Difference]: Start difference. First operand 323 states and 489 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:18,868 INFO L93 Difference]: Finished difference Result 805 states and 1197 transitions. [2023-11-19 05:14:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 102 [2023-11-19 05:14:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:18,872 INFO L225 Difference]: With dead ends: 805 [2023-11-19 05:14:18,872 INFO L226 Difference]: Without dead ends: 483 [2023-11-19 05:14:18,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:18,874 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:18,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 59 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-11-19 05:14:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2023-11-19 05:14:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3672199170124482) internal successors, (659), 482 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 659 transitions. [2023-11-19 05:14:18,897 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 659 transitions. Word has length 102 [2023-11-19 05:14:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:18,897 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 659 transitions. [2023-11-19 05:14:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 659 transitions. [2023-11-19 05:14:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 05:14:18,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:18,905 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:14:18,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:18,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1772722127, now seen corresponding path program 1 times [2023-11-19 05:14:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684425498] [2023-11-19 05:14:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 05:14:19,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:19,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684425498] [2023-11-19 05:14:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684425498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:19,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707747897] [2023-11-19 05:14:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:19,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:19,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:19,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:19,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:19,140 INFO L87 Difference]: Start difference. First operand 483 states and 659 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:19,534 INFO L93 Difference]: Finished difference Result 1125 states and 1578 transitions. [2023-11-19 05:14:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-19 05:14:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:19,539 INFO L225 Difference]: With dead ends: 1125 [2023-11-19 05:14:19,539 INFO L226 Difference]: Without dead ends: 723 [2023-11-19 05:14:19,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:19,541 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:19,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 126 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:14:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-19 05:14:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2023-11-19 05:14:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.2950138504155124) internal successors, (935), 722 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 935 transitions. [2023-11-19 05:14:19,566 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 935 transitions. Word has length 107 [2023-11-19 05:14:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:19,567 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 935 transitions. [2023-11-19 05:14:19,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 935 transitions. [2023-11-19 05:14:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 05:14:19,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:19,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:19,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:14:19,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:19,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 91171940, now seen corresponding path program 1 times [2023-11-19 05:14:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046160518] [2023-11-19 05:14:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:20,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046160518] [2023-11-19 05:14:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046160518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:14:20,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164352707] [2023-11-19 05:14:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:20,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:20,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:20,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:14:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:20,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:14:20,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:14:20,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:14:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164352707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:20,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:14:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-19 05:14:20,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303937959] [2023-11-19 05:14:20,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:20,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:20,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:20,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:20,339 INFO L87 Difference]: Start difference. First operand 723 states and 935 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:20,671 INFO L93 Difference]: Finished difference Result 1765 states and 2361 transitions. [2023-11-19 05:14:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:20,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-19 05:14:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:20,683 INFO L225 Difference]: With dead ends: 1765 [2023-11-19 05:14:20,683 INFO L226 Difference]: Without dead ends: 563 [2023-11-19 05:14:20,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:20,689 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:20,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-19 05:14:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2023-11-19 05:14:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.2800829875518671) internal successors, (617), 482 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 617 transitions. [2023-11-19 05:14:20,704 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 617 transitions. Word has length 107 [2023-11-19 05:14:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:20,705 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 617 transitions. [2023-11-19 05:14:20,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 617 transitions. [2023-11-19 05:14:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 05:14:20,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:20,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:20,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:20,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:14:20,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:20,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash -966260153, now seen corresponding path program 1 times [2023-11-19 05:14:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848844936] [2023-11-19 05:14:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:21,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:21,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848844936] [2023-11-19 05:14:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848844936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576502138] [2023-11-19 05:14:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:21,083 INFO L87 Difference]: Start difference. First operand 483 states and 617 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:21,369 INFO L93 Difference]: Finished difference Result 1045 states and 1343 transitions. [2023-11-19 05:14:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2023-11-19 05:14:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:21,374 INFO L225 Difference]: With dead ends: 1045 [2023-11-19 05:14:21,374 INFO L226 Difference]: Without dead ends: 643 [2023-11-19 05:14:21,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:21,376 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:21,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 122 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-19 05:14:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2023-11-19 05:14:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.2211838006230529) internal successors, (784), 642 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2023-11-19 05:14:21,393 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 121 [2023-11-19 05:14:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:21,394 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2023-11-19 05:14:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2023-11-19 05:14:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-19 05:14:21,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:21,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:14:21,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:21,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -796226699, now seen corresponding path program 1 times [2023-11-19 05:14:21,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:21,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964529628] [2023-11-19 05:14:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:21,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964529628] [2023-11-19 05:14:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964529628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:21,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:21,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748113854] [2023-11-19 05:14:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:21,605 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:21,898 INFO L93 Difference]: Finished difference Result 1445 states and 1825 transitions. [2023-11-19 05:14:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:21,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-19 05:14:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:21,904 INFO L225 Difference]: With dead ends: 1445 [2023-11-19 05:14:21,904 INFO L226 Difference]: Without dead ends: 883 [2023-11-19 05:14:21,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:21,907 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:21,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 95 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-19 05:14:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-19 05:14:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2392290249433107) internal successors, (1093), 882 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1093 transitions. [2023-11-19 05:14:21,931 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1093 transitions. Word has length 142 [2023-11-19 05:14:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:21,932 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1093 transitions. [2023-11-19 05:14:21,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1093 transitions. [2023-11-19 05:14:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-19 05:14:21,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:21,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:14:21,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 520261884, now seen corresponding path program 1 times [2023-11-19 05:14:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:21,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970641509] [2023-11-19 05:14:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 05:14:22,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:22,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970641509] [2023-11-19 05:14:22,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970641509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:22,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:22,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698673227] [2023-11-19 05:14:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:22,123 INFO L87 Difference]: Start difference. First operand 883 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:22,367 INFO L93 Difference]: Finished difference Result 1685 states and 2100 transitions. [2023-11-19 05:14:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 165 [2023-11-19 05:14:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:22,373 INFO L225 Difference]: With dead ends: 1685 [2023-11-19 05:14:22,373 INFO L226 Difference]: Without dead ends: 883 [2023-11-19 05:14:22,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:22,376 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:22,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 132 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:22,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-19 05:14:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-19 05:14:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.1848072562358276) internal successors, (1045), 882 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1045 transitions. [2023-11-19 05:14:22,402 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1045 transitions. Word has length 165 [2023-11-19 05:14:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:22,402 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1045 transitions. [2023-11-19 05:14:22,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1045 transitions. [2023-11-19 05:14:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-19 05:14:22,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:22,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:14:22,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:22,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -703282381, now seen corresponding path program 1 times [2023-11-19 05:14:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:22,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837911114] [2023-11-19 05:14:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 05:14:23,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837911114] [2023-11-19 05:14:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837911114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:14:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747453719] [2023-11-19 05:14:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:23,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:23,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:14:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:23,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:14:23,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-19 05:14:23,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:14:23,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747453719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:23,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:14:23,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:14:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515091664] [2023-11-19 05:14:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:23,529 INFO L87 Difference]: Start difference. First operand 883 states and 1045 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:23,672 INFO L93 Difference]: Finished difference Result 883 states and 1045 transitions. [2023-11-19 05:14:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 200 [2023-11-19 05:14:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:23,674 INFO L225 Difference]: With dead ends: 883 [2023-11-19 05:14:23,674 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:14:23,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:23,676 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:23,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:14:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:14:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:14:23,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2023-11-19 05:14:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:23,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:14:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:14:23,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:14:23,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:14:23,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:23,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:14:23,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:14:24,053 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2023-11-19 05:14:24,054 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2023-11-19 05:14:24,054 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2023-11-19 05:14:24,055 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2023-11-19 05:14:24,055 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2023-11-19 05:14:24,056 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2023-11-19 05:14:24,056 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2023-11-19 05:14:24,056 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2023-11-19 05:14:24,057 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L578(line 578) no Hoare annotation was computed. [2023-11-19 05:14:24,058 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2023-11-19 05:14:24,059 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2023-11-19 05:14:24,059 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2023-11-19 05:14:24,059 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2023-11-19 05:14:24,059 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2023-11-19 05:14:24,060 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2023-11-19 05:14:24,060 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2023-11-19 05:14:24,060 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2023-11-19 05:14:24,060 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2023-11-19 05:14:24,061 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 578) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2023-11-19 05:14:24,062 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2023-11-19 05:14:24,063 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2023-11-19 05:14:24,064 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L610(lines 610 627) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2023-11-19 05:14:24,065 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2023-11-19 05:14:24,066 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2023-11-19 05:14:24,066 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2023-11-19 05:14:24,066 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2023-11-19 05:14:24,066 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2023-11-19 05:14:24,067 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a17~0 8))) (or (and .cse0 (= ~a25~0 1)) (and (<= 10 ~a28~0) .cse0 (= ~a19~0 1)) (and .cse0 (= ~a25~0 0)) (and (= ~a11~0 1) (<= ~a17~0 8)))) [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2023-11-19 05:14:24,068 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2023-11-19 05:14:24,069 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2023-11-19 05:14:24,070 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2023-11-19 05:14:24,070 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 39 608) no Hoare annotation was computed. [2023-11-19 05:14:24,070 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2023-11-19 05:14:24,070 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2023-11-19 05:14:24,070 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2023-11-19 05:14:24,073 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:24,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:14:24,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:14:24 BoogieIcfgContainer [2023-11-19 05:14:24,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:14:24,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:14:24,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:14:24,089 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:14:24,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:15" (3/4) ... [2023-11-19 05:14:24,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:14:24,120 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2023-11-19 05:14:24,121 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 05:14:24,123 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 05:14:24,125 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:14:24,291 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:14:24,291 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:14:24,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:14:24,292 INFO L158 Benchmark]: Toolchain (without parser) took 10910.59ms. Allocated memory was 155.2MB in the beginning and 299.9MB in the end (delta: 144.7MB). Free memory was 121.7MB in the beginning and 136.8MB in the end (delta: -15.1MB). Peak memory consumption was 130.4MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,292 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:24,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 654.07ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 94.7MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.95ms. Allocated memory is still 155.2MB. Free memory was 94.7MB in the beginning and 89.4MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,294 INFO L158 Benchmark]: Boogie Preprocessor took 63.26ms. Allocated memory is still 155.2MB. Free memory was 89.0MB in the beginning and 84.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,294 INFO L158 Benchmark]: RCFGBuilder took 1635.67ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 84.9MB in the beginning and 115.8MB in the end (delta: -30.9MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,295 INFO L158 Benchmark]: TraceAbstraction took 8266.18ms. Allocated memory was 201.3MB in the beginning and 299.9MB in the end (delta: 98.6MB). Free memory was 115.8MB in the beginning and 150.5MB in the end (delta: -34.7MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,295 INFO L158 Benchmark]: Witness Printer took 202.77ms. Allocated memory is still 299.9MB. Free memory was 150.5MB in the beginning and 136.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:14:24,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 654.07ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 94.7MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.95ms. Allocated memory is still 155.2MB. Free memory was 94.7MB in the beginning and 89.4MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.26ms. Allocated memory is still 155.2MB. Free memory was 89.0MB in the beginning and 84.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1635.67ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 84.9MB in the beginning and 115.8MB in the end (delta: -30.9MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8266.18ms. Allocated memory was 201.3MB in the beginning and 299.9MB in the end (delta: 98.6MB). Free memory was 115.8MB in the beginning and 150.5MB in the end (delta: -34.7MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 202.77ms. Allocated memory is still 299.9MB. Free memory was 150.5MB in the beginning and 136.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 578]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 569 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 569 mSDsluCounter, 766 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 434 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1988 IncrementalHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 434 mSolverCounterUnsat, 715 mSDtfsCounter, 1988 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=8, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 82 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 19 NumberOfFragments, 32 HoareAnnotationTreeSize, 1 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 217 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1528 NumberOfCodeBlocks, 1528 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1516 ConstructedInterpolants, 0 QuantifiedInterpolants, 6658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 612/747 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a17 == 8) && (a25 == 1)) || (((10 <= a28) && (a17 == 8)) && (a19 == 1))) || ((a17 == 8) && (a25 == 0))) || ((a11 == 1) && (a17 <= 8))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:14:24,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb615be-22ef-4e5c-bcad-d2dc284be77c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE