./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/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_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/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_93871cf7-c5d7-4d64-8704-a9417dfae39d/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 3b098f62dc80370f0e14e7fa6b354d0aae7e8d94738f84002290c368f38c01b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:11:01,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:11:01,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:11:01,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:11:01,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:11:01,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:11:01,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:11:01,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:11:01,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:11:01,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:11:01,241 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:11:01,241 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:11:01,242 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:11:01,242 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:11:01,242 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:11:01,243 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:11:01,243 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:11:01,244 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:11:01,244 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:11:01,245 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:11:01,245 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:11:01,246 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:11:01,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:11:01,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:11:01,248 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:11:01,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:11:01,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:11:01,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:11:01,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:11:01,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:11:01,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:11:01,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:11:01,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:11:01,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:11:01,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:11:01,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:11:01,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:01,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:11:01,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:11:01,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:11:01,254 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:11:01,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:11:01,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:11:01,255 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:11:01,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:11:01,256 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_93871cf7-c5d7-4d64-8704-a9417dfae39d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b098f62dc80370f0e14e7fa6b354d0aae7e8d94738f84002290c368f38c01b4 [2023-11-19 05:11:01,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:11:01,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:11:01,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:11:01,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:11:01,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:11:01,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2023-11-19 05:11:04,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:11:05,081 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:11:05,082 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2023-11-19 05:11:05,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/data/44c3ebfa7/354a515d4f334c26a1b48160f58670ff/FLAGc686f5ae4 [2023-11-19 05:11:05,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/data/44c3ebfa7/354a515d4f334c26a1b48160f58670ff [2023-11-19 05:11:05,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:11:05,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:11:05,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:05,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:11:05,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:11:05,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6646277c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05, skipping insertion in model container [2023-11-19 05:11:05,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,205 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:11:05,595 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_93871cf7-c5d7-4d64-8704-a9417dfae39d/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2023-11-19 05:11:05,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:05,645 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:11:05,717 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_93871cf7-c5d7-4d64-8704-a9417dfae39d/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2023-11-19 05:11:05,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:05,778 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:11:05,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05 WrapperNode [2023-11-19 05:11:05,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:05,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:05,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:11:05,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:11:05,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,901 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-11-19 05:11:05,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:05,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:11:05,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:11:05,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:11:05,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:11:05,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:11:05,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:11:05,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:11:05,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (1/1) ... [2023-11-19 05:11:05,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:06,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:11:06,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:11:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:11:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:11:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:11:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:11:06,187 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:11:06,190 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:11:07,374 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:11:07,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:11:07,670 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:11:07,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:07 BoogieIcfgContainer [2023-11-19 05:11:07,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:11:07,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:11:07,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:11:07,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:11:07,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:11:05" (1/3) ... [2023-11-19 05:11:07,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408ec553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:07, skipping insertion in model container [2023-11-19 05:11:07,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:05" (2/3) ... [2023-11-19 05:11:07,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408ec553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:07, skipping insertion in model container [2023-11-19 05:11:07,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:07" (3/3) ... [2023-11-19 05:11:07,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label24.c [2023-11-19 05:11:07,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:11:07,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:11:07,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:11:07,786 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;@1ee3ae54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:11:07,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:11:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 05:11:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:11:07,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:07,808 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] [2023-11-19 05:11:07,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:07,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -104661568, now seen corresponding path program 1 times [2023-11-19 05:11:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065761306] [2023-11-19 05:11:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:08,452 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 05:11:08,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065761306] [2023-11-19 05:11:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065761306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:11:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181314082] [2023-11-19 05:11:08,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:08,503 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:11:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:08,932 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-11-19 05:11:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2023-11-19 05:11:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:08,948 INFO L225 Difference]: With dead ends: 224 [2023-11-19 05:11:08,948 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 05:11:08,951 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 05:11:08,955 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:08,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:11:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 05:11:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-19 05:11:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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 05:11:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2023-11-19 05:11:09,024 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2023-11-19 05:11:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:09,025 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2023-11-19 05:11:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:11:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2023-11-19 05:11:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 05:11:09,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:09,031 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-11-19 05:11:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:11:09,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -601815149, now seen corresponding path program 1 times [2023-11-19 05:11:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055888180] [2023-11-19 05:11:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:09,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:09,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055888180] [2023-11-19 05:11:09,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055888180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:09,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:09,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:11:09,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032301907] [2023-11-19 05:11:09,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:09,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:09,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:09,201 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 05:11:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:09,616 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2023-11-19 05:11:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2023-11-19 05:11:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:09,619 INFO L225 Difference]: With dead ends: 431 [2023-11-19 05:11:09,620 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 05:11:09,621 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 05:11:09,622 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:09,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:11:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 05:11:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-19 05:11:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 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 05:11:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2023-11-19 05:11:09,678 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2023-11-19 05:11:09,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:09,678 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2023-11-19 05:11:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 05:11:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2023-11-19 05:11:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 05:11:09,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:09,682 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-11-19 05:11:09,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:11:09,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:09,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:09,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1164148719, now seen corresponding path program 1 times [2023-11-19 05:11:09,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855793276] [2023-11-19 05:11:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:10,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:10,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855793276] [2023-11-19 05:11:10,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855793276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:10,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:10,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134244396] [2023-11-19 05:11:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:10,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:11:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:11:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:11:10,072 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 05:11:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:10,610 INFO L93 Difference]: Finished difference Result 713 states and 1141 transitions. [2023-11-19 05:11:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:11:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-19 05:11:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:10,614 INFO L225 Difference]: With dead ends: 713 [2023-11-19 05:11:10,614 INFO L226 Difference]: Without dead ends: 358 [2023-11-19 05:11:10,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:11:10,617 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 69 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:10,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:11:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-19 05:11:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-19 05:11:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.350140056022409) internal successors, (482), 357 states have internal predecessors, (482), 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 05:11:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 482 transitions. [2023-11-19 05:11:10,637 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 482 transitions. Word has length 78 [2023-11-19 05:11:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:10,637 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 482 transitions. [2023-11-19 05:11:10,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 05:11:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 482 transitions. [2023-11-19 05:11:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 05:11:10,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:10,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-19 05:11:10,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:11:10,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:10,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash -922334385, now seen corresponding path program 1 times [2023-11-19 05:11:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374402396] [2023-11-19 05:11:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:10,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374402396] [2023-11-19 05:11:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374402396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670843713] [2023-11-19 05:11:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:10,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:10,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:10,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:11:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:11,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:11,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:11:11,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670843713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:11,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:11,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977916618] [2023-11-19 05:11:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:11,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:11,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:11,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:11,181 INFO L87 Difference]: Start difference. First operand 358 states and 482 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:11:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:11,480 INFO L93 Difference]: Finished difference Result 857 states and 1185 transitions. [2023-11-19 05:11:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:11,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-19 05:11:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:11,484 INFO L225 Difference]: With dead ends: 857 [2023-11-19 05:11:11,484 INFO L226 Difference]: Without dead ends: 500 [2023-11-19 05:11:11,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:11,487 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:11,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-19 05:11:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2023-11-19 05:11:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3481308411214954) internal successors, (577), 428 states have internal predecessors, (577), 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 05:11:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 577 transitions. [2023-11-19 05:11:11,506 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 577 transitions. Word has length 86 [2023-11-19 05:11:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:11,506 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 577 transitions. [2023-11-19 05:11:11,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:11:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 577 transitions. [2023-11-19 05:11:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 05:11:11,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:11,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 05:11:11,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:11:11,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:11,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:11,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1618270295, now seen corresponding path program 1 times [2023-11-19 05:11:11,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:11,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287610411] [2023-11-19 05:11:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 05:11:12,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287610411] [2023-11-19 05:11:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287610411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348396193] [2023-11-19 05:11:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:12,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:12,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:12,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:11:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:12,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:12,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 05:11:12,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348396193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:12,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330902326] [2023-11-19 05:11:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:12,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:12,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:12,313 INFO L87 Difference]: Start difference. First operand 429 states and 577 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 05:11:12,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:12,645 INFO L93 Difference]: Finished difference Result 1212 states and 1654 transitions. [2023-11-19 05:11:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:12,645 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 102 [2023-11-19 05:11:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:12,650 INFO L225 Difference]: With dead ends: 1212 [2023-11-19 05:11:12,651 INFO L226 Difference]: Without dead ends: 784 [2023-11-19 05:11:12,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:12,653 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:12,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-11-19 05:11:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2023-11-19 05:11:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3231162196679438) internal successors, (1036), 783 states have internal predecessors, (1036), 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 05:11:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2023-11-19 05:11:12,677 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 102 [2023-11-19 05:11:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:12,677 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2023-11-19 05:11:12,678 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 05:11:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2023-11-19 05:11:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 05:11:12,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:12,681 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-11-19 05:11:12,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:12,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:12,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:12,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 646502477, now seen corresponding path program 1 times [2023-11-19 05:11:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:12,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013620458] [2023-11-19 05:11:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 05:11:13,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013620458] [2023-11-19 05:11:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013620458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333963147] [2023-11-19 05:11:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:13,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:13,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:11:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:13,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:13,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 05:11:13,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333963147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:13,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740067081] [2023-11-19 05:11:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:13,390 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 05:11:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:13,699 INFO L93 Difference]: Finished difference Result 2277 states and 3020 transitions. [2023-11-19 05:11:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 114 [2023-11-19 05:11:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:13,708 INFO L225 Difference]: With dead ends: 2277 [2023-11-19 05:11:13,708 INFO L226 Difference]: Without dead ends: 1494 [2023-11-19 05:11:13,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:13,711 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:13,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 13 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-11-19 05:11:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1281. [2023-11-19 05:11:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.33046875) internal successors, (1703), 1280 states have internal predecessors, (1703), 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 05:11:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1703 transitions. [2023-11-19 05:11:13,750 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1703 transitions. Word has length 114 [2023-11-19 05:11:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:13,750 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1703 transitions. [2023-11-19 05:11:13,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 05:11:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1703 transitions. [2023-11-19 05:11:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 05:11:13,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:13,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 05:11:13,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:11:13,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:13,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash 518155816, now seen corresponding path program 1 times [2023-11-19 05:11:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238793101] [2023-11-19 05:11:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-19 05:11:14,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:14,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238793101] [2023-11-19 05:11:14,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238793101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:14,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898275104] [2023-11-19 05:11:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:14,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:14,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:14,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:11:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:14,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:14,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 05:11:14,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898275104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:14,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314588020] [2023-11-19 05:11:14,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:14,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:14,557 INFO L87 Difference]: Start difference. First operand 1281 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 05:11:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:14,899 INFO L93 Difference]: Finished difference Result 2774 states and 3663 transitions. [2023-11-19 05:11:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 116 [2023-11-19 05:11:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:14,908 INFO L225 Difference]: With dead ends: 2774 [2023-11-19 05:11:14,909 INFO L226 Difference]: Without dead ends: 1423 [2023-11-19 05:11:14,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:14,912 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:14,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 119 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-11-19 05:11:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1210. [2023-11-19 05:11:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.2663358147229116) internal successors, (1531), 1209 states have internal predecessors, (1531), 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 05:11:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1531 transitions. [2023-11-19 05:11:14,950 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1531 transitions. Word has length 116 [2023-11-19 05:11:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:14,950 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1531 transitions. [2023-11-19 05:11:14,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 05:11:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1531 transitions. [2023-11-19 05:11:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 05:11:14,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:14,954 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-11-19 05:11:14,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:15,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:15,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:15,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash -941979293, now seen corresponding path program 1 times [2023-11-19 05:11:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006411792] [2023-11-19 05:11:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 05:11:15,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006411792] [2023-11-19 05:11:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006411792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567456117] [2023-11-19 05:11:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:15,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:15,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:15,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:15,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:11:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:15,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:15,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:11:15,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567456117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:15,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127356089] [2023-11-19 05:11:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:15,682 INFO L87 Difference]: Start difference. First operand 1210 states and 1531 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 05:11:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:15,955 INFO L93 Difference]: Finished difference Result 2490 states and 3148 transitions. [2023-11-19 05:11:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:15,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 119 [2023-11-19 05:11:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:15,963 INFO L225 Difference]: With dead ends: 2490 [2023-11-19 05:11:15,963 INFO L226 Difference]: Without dead ends: 1281 [2023-11-19 05:11:15,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:15,966 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:15,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 98 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-11-19 05:11:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2023-11-19 05:11:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.23125) internal successors, (1576), 1280 states have internal predecessors, (1576), 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 05:11:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1576 transitions. [2023-11-19 05:11:16,001 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1576 transitions. Word has length 119 [2023-11-19 05:11:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:16,001 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1576 transitions. [2023-11-19 05:11:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 05:11:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1576 transitions. [2023-11-19 05:11:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-19 05:11:16,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:16,006 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 05:11:16,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 05:11:16,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:16,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:16,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1266865242, now seen corresponding path program 1 times [2023-11-19 05:11:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:16,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538973432] [2023-11-19 05:11:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-19 05:11:16,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538973432] [2023-11-19 05:11:16,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538973432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:16,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407175615] [2023-11-19 05:11:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:16,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:16,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:16,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:16,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:11:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:16,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:11:16,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-19 05:11:16,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407175615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:16,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 05:11:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056568188] [2023-11-19 05:11:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:16,803 INFO L87 Difference]: Start difference. First operand 1281 states and 1576 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 05:11:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:17,117 INFO L93 Difference]: Finished difference Result 3127 states and 3844 transitions. [2023-11-19 05:11:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:17,117 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 148 [2023-11-19 05:11:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:17,118 INFO L225 Difference]: With dead ends: 3127 [2023-11-19 05:11:17,118 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:11:17,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:17,122 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:17,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 119 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:11:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:11:17,123 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 05:11:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:11:17,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 148 [2023-11-19 05:11:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:11:17,124 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 05:11:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:11:17,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:11:17,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:11:17,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:17,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:17,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:11:17,593 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-11-19 05:11:17,593 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-11-19 05:11:17,594 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-11-19 05:11:17,595 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-11-19 05:11:17,596 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-11-19 05:11:17,599 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-11-19 05:11:17,599 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-11-19 05:11:17,599 INFO L899 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 05:11:17,599 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-11-19 05:11:17,600 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-11-19 05:11:17,600 INFO L899 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2023-11-19 05:11:17,601 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-11-19 05:11:17,601 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-11-19 05:11:17,601 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-11-19 05:11:17,601 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-11-19 05:11:17,602 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-11-19 05:11:17,603 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-11-19 05:11:17,604 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-11-19 05:11:17,604 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-11-19 05:11:17,604 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-11-19 05:11:17,605 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-11-19 05:11:17,606 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 4) .cse0) (< ~a21~0 1) (<= ~a20~0 0) (and (<= ~a17~0 0) .cse0) (and (= ~a12~0 8) (= ~a21~0 1) (= ~a7~0 0) (= ~a17~0 1) .cse0) (and (<= 6 ~a16~0) .cse0))) [2023-11-19 05:11:17,606 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-11-19 05:11:17,606 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-11-19 05:11:17,606 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 480) no Hoare annotation was computed. [2023-11-19 05:11:17,606 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-11-19 05:11:17,607 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-11-19 05:11:17,607 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-11-19 05:11:17,607 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-11-19 05:11:17,607 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-11-19 05:11:17,607 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-11-19 05:11:17,610 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:17,612 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:11:17,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:11:17 BoogieIcfgContainer [2023-11-19 05:11:17,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:11:17,628 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:11:17,628 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:11:17,628 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:11:17,629 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:07" (3/4) ... [2023-11-19 05:11:17,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:11:17,650 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2023-11-19 05:11:17,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-19 05:11:17,654 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 05:11:17,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:11:17,864 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:11:17,865 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:11:17,865 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:11:17,866 INFO L158 Benchmark]: Toolchain (without parser) took 12738.80ms. Allocated memory was 115.3MB in the beginning and 268.4MB in the end (delta: 153.1MB). Free memory was 66.4MB in the beginning and 180.6MB in the end (delta: -114.2MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,866 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:11:17,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.46ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 66.4MB in the beginning and 119.6MB in the end (delta: -53.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.94ms. Allocated memory is still 153.1MB. Free memory was 119.5MB in the beginning and 118.4MB in the end (delta: 1.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,868 INFO L158 Benchmark]: Boogie Preprocessor took 75.26ms. Allocated memory is still 153.1MB. Free memory was 118.4MB in the beginning and 114.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,868 INFO L158 Benchmark]: RCFGBuilder took 1698.05ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 106.5MB in the end (delta: 7.7MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,869 INFO L158 Benchmark]: TraceAbstraction took 9948.17ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 105.4MB in the beginning and 194.3MB in the end (delta: -88.8MB). Peak memory consumption was 146.4MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,870 INFO L158 Benchmark]: Witness Printer took 237.32ms. Allocated memory is still 268.4MB. Free memory was 193.2MB in the beginning and 180.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:11:17,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.46ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 66.4MB in the beginning and 119.6MB in the end (delta: -53.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.94ms. Allocated memory is still 153.1MB. Free memory was 119.5MB in the beginning and 118.4MB in the end (delta: 1.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.26ms. Allocated memory is still 153.1MB. Free memory was 118.4MB in the beginning and 114.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1698.05ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 106.5MB in the end (delta: 7.7MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9948.17ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 105.4MB in the beginning and 194.3MB in the end (delta: -88.8MB). Peak memory consumption was 146.4MB. Max. memory is 16.1GB. * Witness Printer took 237.32ms. Allocated memory is still 268.4MB. Free memory was 193.2MB in the beginning and 180.6MB in the end (delta: 12.6MB). 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: 480]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 275 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 715 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2004 IncrementalHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 394 mSolverCounterUnsat, 678 mSDtfsCounter, 2004 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=6, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 497 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 29 NumberOfFragments, 44 HoareAnnotationTreeSize, 1 FomulaSimplifications, 401 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 268 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1596 NumberOfCodeBlocks, 1596 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1581 ConstructedInterpolants, 0 QuantifiedInterpolants, 4600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1915 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 999/1017 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: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 4) && (a20 == 1)) || (a21 < 1)) || (a20 <= 0)) || ((a17 <= 0) && (a20 == 1))) || (((((a12 == 8) && (a21 == 1)) && (a7 == 0)) && (a17 == 1)) && (a20 == 1))) || ((6 <= a16) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:11:17,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93871cf7-c5d7-4d64-8704-a9417dfae39d/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