./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --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 ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:37:23,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:37:23,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:37:23,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:37:23,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:37:23,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:37:23,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:37:23,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:37:23,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:37:23,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:37:23,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:37:23,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:37:23,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:37:23,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:37:23,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:37:23,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:37:23,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:37:23,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:37:23,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:37:23,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:37:23,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:37:23,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:37:23,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:37:23,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:37:23,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:37:23,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:37:23,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:37:23,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:37:23,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:37:23,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:37:23,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:37:23,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:37:23,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:37:23,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:37:23,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:37:23,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:37:23,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:37:23,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:37:23,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:37:23,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:37:23,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:37:23,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:37:23,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:37:23,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:37:23,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:37:23,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:37:23,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:37:23,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:37:23,313 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:37:23,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:37:23,314 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:37:23,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:37:23,315 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:37:23,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:37:23,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:37:23,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:37:23,316 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:37:23,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:37:23,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:37:23,317 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:37:23,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:37:23,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:37:23,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:37:23,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:37:23,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:37:23,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:37:23,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:37:23,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:37:23,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:37:23,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:37:23,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:37:23,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:37:23,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:37:23,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:37:23,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:23,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:37:23,322 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:37:23,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:37:23,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:37:23,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:37:23,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:37:23,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:37:23,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:37:23,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe [2022-11-20 20:37:23,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:37:23,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:37:23,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:37:23,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:37:23,714 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:37:23,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/systemc/transmitter.01.cil.c [2022-11-20 20:37:26,841 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:37:27,096 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:37:27,100 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/sv-benchmarks/c/systemc/transmitter.01.cil.c [2022-11-20 20:37:27,115 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/data/4a8e11bc5/6296ec4b5cca490fa68fc7038ae7afe2/FLAG26d8426c2 [2022-11-20 20:37:27,130 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/data/4a8e11bc5/6296ec4b5cca490fa68fc7038ae7afe2 [2022-11-20 20:37:27,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:37:27,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:37:27,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:27,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:37:27,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:37:27,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5651efbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27, skipping insertion in model container [2022-11-20 20:37:27,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:37:27,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:37:27,359 WARN L237 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_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2022-11-20 20:37:27,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:27,502 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:37:27,527 WARN L237 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_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2022-11-20 20:37:27,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:37:27,594 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:37:27,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27 WrapperNode [2022-11-20 20:37:27,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:37:27,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:27,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:37:27,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:37:27,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,671 INFO L138 Inliner]: procedures = 30, calls = 33, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 209 [2022-11-20 20:37:27,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:37:27,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:37:27,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:37:27,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:37:27,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:37:27,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:37:27,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:37:27,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:37:27,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (1/1) ... [2022-11-20 20:37:27,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:37:27,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:37:27,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:37:27,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:37:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:37:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 20:37:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 20:37:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 20:37:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 20:37:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 20:37:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 20:37:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 20:37:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 20:37:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:37:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 20:37:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 20:37:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:37:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:37:27,949 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:37:27,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:37:28,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:37:28,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:37:28,534 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 20:37:28,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:28 BoogieIcfgContainer [2022-11-20 20:37:28,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:37:28,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:37:28,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:37:28,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:37:28,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:37:27" (1/3) ... [2022-11-20 20:37:28,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f3f5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:28, skipping insertion in model container [2022-11-20 20:37:28,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:37:27" (2/3) ... [2022-11-20 20:37:28,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f3f5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:37:28, skipping insertion in model container [2022-11-20 20:37:28,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:28" (3/3) ... [2022-11-20 20:37:28,548 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2022-11-20 20:37:28,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:37:28,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:37:28,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:37:28,653 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=LoopsAndPotentialCycles, 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;@7ae60367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:37:28,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:37:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 20:37:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 20:37:28,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:28,672 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] [2022-11-20 20:37:28,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash 606187768, now seen corresponding path program 1 times [2022-11-20 20:37:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:28,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246384454] [2022-11-20 20:37:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:29,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:29,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246384454] [2022-11-20 20:37:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246384454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:29,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:29,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:37:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971153835] [2022-11-20 20:37:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:29,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:37:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:37:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:29,209 INFO L87 Difference]: Start difference. First operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 20:37:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:29,578 INFO L93 Difference]: Finished difference Result 169 states and 242 transitions. [2022-11-20 20:37:29,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:37:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-11-20 20:37:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:29,595 INFO L225 Difference]: With dead ends: 169 [2022-11-20 20:37:29,596 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 20:37:29,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:29,606 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 130 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:29,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 174 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:37:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 20:37:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-11-20 20:37:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 74 states have internal predecessors, (94), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-20 20:37:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2022-11-20 20:37:29,724 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 33 [2022-11-20 20:37:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:29,725 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2022-11-20 20:37:29,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 20:37:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2022-11-20 20:37:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 20:37:29,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:29,727 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] [2022-11-20 20:37:29,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:37:29,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:29,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1386168697, now seen corresponding path program 1 times [2022-11-20 20:37:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:29,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319655925] [2022-11-20 20:37:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:29,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:30,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:30,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319655925] [2022-11-20 20:37:30,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319655925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:30,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:30,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:37:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874341092] [2022-11-20 20:37:30,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:37:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:37:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:37:30,137 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 20:37:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:30,459 INFO L93 Difference]: Finished difference Result 271 states and 348 transitions. [2022-11-20 20:37:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:37:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-11-20 20:37:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:30,464 INFO L225 Difference]: With dead ends: 271 [2022-11-20 20:37:30,464 INFO L226 Difference]: Without dead ends: 172 [2022-11-20 20:37:30,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:37:30,467 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 180 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:30,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 166 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:37:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-20 20:37:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2022-11-20 20:37:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 113 states have internal predecessors, (143), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 20:37:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2022-11-20 20:37:30,505 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 33 [2022-11-20 20:37:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:30,505 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2022-11-20 20:37:30,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 20:37:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2022-11-20 20:37:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 20:37:30,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:30,510 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] [2022-11-20 20:37:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:37:30,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 912561565, now seen corresponding path program 1 times [2022-11-20 20:37:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:30,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846239858] [2022-11-20 20:37:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:37:30,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:30,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846239858] [2022-11-20 20:37:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846239858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:30,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178539627] [2022-11-20 20:37:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:30,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:30,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:30,621 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 20:37:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:30,737 INFO L93 Difference]: Finished difference Result 454 states and 578 transitions. [2022-11-20 20:37:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-11-20 20:37:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:30,744 INFO L225 Difference]: With dead ends: 454 [2022-11-20 20:37:30,744 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 20:37:30,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:30,756 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 57 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:30,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 20:37:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2022-11-20 20:37:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 211 states have (on average 1.2274881516587677) internal successors, (259), 212 states have internal predecessors, (259), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-20 20:37:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2022-11-20 20:37:30,854 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 34 [2022-11-20 20:37:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2022-11-20 20:37:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 20:37:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2022-11-20 20:37:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 20:37:30,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:30,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:37:30,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1714501433, now seen corresponding path program 1 times [2022-11-20 20:37:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:30,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568118565] [2022-11-20 20:37:30,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:30,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:37:30,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568118565] [2022-11-20 20:37:30,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568118565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:30,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:30,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:37:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827638657] [2022-11-20 20:37:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:37:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:37:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:30,987 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 20:37:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:31,120 INFO L93 Difference]: Finished difference Result 544 states and 675 transitions. [2022-11-20 20:37:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:37:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-20 20:37:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:31,127 INFO L225 Difference]: With dead ends: 544 [2022-11-20 20:37:31,127 INFO L226 Difference]: Without dead ends: 392 [2022-11-20 20:37:31,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:37:31,140 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:31,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 159 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-20 20:37:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 328. [2022-11-20 20:37:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 235 states have (on average 1.2297872340425533) internal successors, (289), 236 states have internal predecessors, (289), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-20 20:37:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 403 transitions. [2022-11-20 20:37:31,213 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 403 transitions. Word has length 46 [2022-11-20 20:37:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:31,216 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 403 transitions. [2022-11-20 20:37:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 20:37:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 403 transitions. [2022-11-20 20:37:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 20:37:31,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:31,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:37:31,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 355288439, now seen corresponding path program 1 times [2022-11-20 20:37:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718561227] [2022-11-20 20:37:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:37:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 20:37:31,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:37:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718561227] [2022-11-20 20:37:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718561227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:37:31,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:37:31,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:37:31,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988964491] [2022-11-20 20:37:31,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:37:31,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:37:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:37:31,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:37:31,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:31,330 INFO L87 Difference]: Start difference. First operand 328 states and 403 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:37:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:37:31,555 INFO L93 Difference]: Finished difference Result 510 states and 637 transitions. [2022-11-20 20:37:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:37:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-11-20 20:37:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:37:31,561 INFO L225 Difference]: With dead ends: 510 [2022-11-20 20:37:31,562 INFO L226 Difference]: Without dead ends: 328 [2022-11-20 20:37:31,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:37:31,563 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 126 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:37:31,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 174 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:37:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-20 20:37:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2022-11-20 20:37:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 231 states have (on average 1.1904761904761905) internal successors, (275), 232 states have internal predecessors, (275), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-20 20:37:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 389 transitions. [2022-11-20 20:37:31,640 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 389 transitions. Word has length 60 [2022-11-20 20:37:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:37:31,640 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 389 transitions. [2022-11-20 20:37:31,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:37:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 389 transitions. [2022-11-20 20:37:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 20:37:31,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:37:31,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:37:31,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:37:31,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:37:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:37:31,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1643482968, now seen corresponding path program 1 times [2022-11-20 20:37:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:37:31,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787819537] [2022-11-20 20:37:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:37:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:37:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:37:31,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:37:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:37:31,731 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:37:31,732 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:37:31,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:37:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:37:31,740 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 20:37:31,745 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:37:31,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:37:31 BoogieIcfgContainer [2022-11-20 20:37:31,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:37:31,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:37:31,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:37:31,830 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:37:31,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:37:28" (3/4) ... [2022-11-20 20:37:31,833 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 20:37:31,944 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:37:31,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:37:31,945 INFO L158 Benchmark]: Toolchain (without parser) took 4810.97ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 151.7MB in the beginning and 96.8MB in the end (delta: 54.9MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,945 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:37:31,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.86ms. Allocated memory is still 182.5MB. Free memory was 151.7MB in the beginning and 149.4MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.93ms. Allocated memory is still 182.5MB. Free memory was 149.4MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,946 INFO L158 Benchmark]: Boogie Preprocessor took 52.16ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 146.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:37:31,946 INFO L158 Benchmark]: RCFGBuilder took 811.69ms. Allocated memory is still 182.5MB. Free memory was 145.3MB in the beginning and 119.2MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,946 INFO L158 Benchmark]: TraceAbstraction took 3289.19ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 118.9MB in the beginning and 102.0MB in the end (delta: 16.9MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,947 INFO L158 Benchmark]: Witness Printer took 114.04ms. Allocated memory is still 220.2MB. Free memory was 102.0MB in the beginning and 96.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:37:31,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.86ms. Allocated memory is still 182.5MB. Free memory was 151.7MB in the beginning and 149.4MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.93ms. Allocated memory is still 182.5MB. Free memory was 149.4MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.16ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 146.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 811.69ms. Allocated memory is still 182.5MB. Free memory was 145.3MB in the beginning and 119.2MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3289.19ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 118.9MB in the beginning and 102.0MB in the end (delta: 16.9MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Witness Printer took 114.04ms. Allocated memory is still 220.2MB. Free memory was 102.0MB in the beginning and 96.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int m_i ; [L30] int t1_i ; [L31] int M_E = 2; [L32] int T1_E = 2; [L33] int E_1 = 2; [L449] int __retres1 ; [L453] CALL init_model() [L364] m_i = 1 [L365] t1_i = 1 [L453] RET init_model() [L454] CALL start_simulation() [L390] int kernel_st ; [L391] int tmp ; [L392] int tmp___0 ; [L396] kernel_st = 0 VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L397] FCALL update_channels() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L398] CALL init_threads() [L161] COND TRUE m_i == 1 [L162] m_st = 0 [L166] COND TRUE t1_i == 1 [L167] t1_st = 0 [L398] RET init_threads() [L399] CALL fire_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L250] COND FALSE !(M_E == 0) [L255] COND FALSE !(T1_E == 0) [L260] COND FALSE !(E_1 == 0) [L399] RET fire_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L400] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L125] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L134] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L144] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND FALSE !(\read(tmp___0)) [L400] RET activate_threads() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L401] CALL reset_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L273] COND FALSE !(M_E == 1) [L278] COND FALSE !(T1_E == 1) [L283] COND FALSE !(E_1 == 1) [L401] RET reset_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L404] COND TRUE 1 [L407] kernel_st = 1 [L408] CALL eval() [L197] int tmp ; VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND TRUE t1_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1] [L93] COND TRUE 1 [L95] t1_pc = 1 [L96] t1_st = 2 [L231] RET transmit1() [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp_ndt_1) [L216] m_st = 1 [L217] CALL master() [L41] COND TRUE m_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L52] COND TRUE 1 [L55] E_1 = 1 [L56] CALL immediate_notify() [L322] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L125] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L134] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L135] COND TRUE E_1 == 1 [L136] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND TRUE \read(tmp___0) [L309] t1_st = 0 [L322] RET activate_threads() VAL [E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L56] RET immediate_notify() [L57] E_1 = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L60] COND TRUE 1 [L62] m_pc = 1 [L63] m_st = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L217] RET master() [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND FALSE !(t1_pc == 0) VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] [L85] COND TRUE t1_pc == 1 [L101] CALL error() [L21] reach_error() VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 527 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 419 IncrementalHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 470 mSDtfsCounter, 419 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 88 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 30/30 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-20 20:37:31,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fea775b7-0e6e-4176-ad92-7c9617ea8f6f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE