./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan --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 25cb318ab1a29f2a64c5b78bc114eca9d9643fed ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:27:15,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:27:15,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:27:15,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:27:15,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:27:15,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:27:15,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:27:15,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:27:15,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:27:15,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:27:15,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:27:15,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:27:15,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:27:15,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:27:15,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:27:15,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:27:15,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:27:15,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:27:15,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:27:15,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:27:15,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:27:15,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:27:15,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:27:15,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:27:15,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:27:15,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:27:15,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:27:15,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:27:15,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:27:15,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:27:15,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:27:15,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:27:15,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:27:15,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:27:15,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:27:15,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:27:15,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:27:15,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:27:15,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:27:15,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:27:15,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:27:15,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:27:15,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:27:15,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:27:15,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:27:15,168 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:27:15,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:27:15,168 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:27:15,168 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:27:15,169 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:27:15,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:27:15,169 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:27:15,169 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:27:15,169 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:27:15,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:27:15,170 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:27:15,170 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:27:15,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:27:15,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:27:15,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:27:15,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:27:15,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:27:15,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:27:15,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:27:15,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:27:15,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:27:15,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:27:15,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:27:15,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:27:15,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:27:15,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:27:15,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:27:15,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:27:15,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:27:15,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:27:15,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:27:15,174 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:27:15,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:27:15,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:27:15,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:27:15,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:27:15,175 INFO L138 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-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cb318ab1a29f2a64c5b78bc114eca9d9643fed [2020-12-09 05:27:15,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:27:15,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:27:15,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:27:15,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:27:15,373 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:27:15,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i [2020-12-09 05:27:15,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/data/a155a8a4b/8ba28e6579d9478d978990ef8a046434/FLAGebfe1a410 [2020-12-09 05:27:15,831 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:27:15,832 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i [2020-12-09 05:27:15,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/data/a155a8a4b/8ba28e6579d9478d978990ef8a046434/FLAGebfe1a410 [2020-12-09 05:27:15,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/data/a155a8a4b/8ba28e6579d9478d978990ef8a046434 [2020-12-09 05:27:15,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:27:15,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:27:15,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:27:15,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:27:15,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:27:15,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:27:15" (1/1) ... [2020-12-09 05:27:15,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f77440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:15, skipping insertion in model container [2020-12-09 05:27:15,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:27:15" (1/1) ... [2020-12-09 05:27:15,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:27:15,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:27:16,043 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i[949,962] [2020-12-09 05:27:16,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:27:16,148 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:27:16,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i[949,962] [2020-12-09 05:27:16,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:27:16,229 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:27:16,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16 WrapperNode [2020-12-09 05:27:16,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:27:16,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:27:16,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:27:16,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:27:16,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:27:16,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:27:16,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:27:16,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:27:16,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... [2020-12-09 05:27:16,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:27:16,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:27:16,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:27:16,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:27:16,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 05:27:16,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 05:27:16,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 05:27:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 05:27:16,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 05:27:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:27:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 05:27:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:27:16,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:27:16,336 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 05:27:16,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:27:16,576 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 05:27:16,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:27:16 BoogieIcfgContainer [2020-12-09 05:27:16,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:27:16,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:27:16,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:27:16,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:27:16,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:27:15" (1/3) ... [2020-12-09 05:27:16,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158e4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:27:16, skipping insertion in model container [2020-12-09 05:27:16,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:27:16" (2/3) ... [2020-12-09 05:27:16,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158e4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:27:16, skipping insertion in model container [2020-12-09 05:27:16,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:27:16" (3/3) ... [2020-12-09 05:27:16,587 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-12-09 05:27:16,600 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:27:16,600 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:27:16,603 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:27:16,604 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:27:16,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,629 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,636 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,636 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:27:16,639 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:27:16,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 05:27:16,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:27:16,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:27:16,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:27:16,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:27:16,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:27:16,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:27:16,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:27:16,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:27:16,671 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:27:16,672 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 05:27:16,674 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 05:27:16,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 05:27:16,707 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 05:27:16,707 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:27:16,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 05:27:16,712 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 05:27:18,363 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 05:27:18,549 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 05:27:18,646 INFO L131 LiptonReduction]: Checked pairs total: 2576 [2020-12-09 05:27:18,646 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 05:27:18,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 05:27:18,667 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 05:27:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 05:27:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:27:18,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:18,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:18,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash 694239397, now seen corresponding path program 1 times [2020-12-09 05:27:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:18,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534269561] [2020-12-09 05:27:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534269561] [2020-12-09 05:27:18,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:18,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:27:18,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240805645] [2020-12-09 05:27:18,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:27:18,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:27:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:27:18,810 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 05:27:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:18,832 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 05:27:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:27:18,833 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 05:27:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:18,847 INFO L225 Difference]: With dead ends: 362 [2020-12-09 05:27:18,848 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 05:27:18,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:27:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 05:27:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 05:27:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 05:27:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 05:27:18,902 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 05:27:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:18,903 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 05:27:18,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:27:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 05:27:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:27:18,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:18,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:18,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:27:18,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:18,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash 46562236, now seen corresponding path program 1 times [2020-12-09 05:27:18,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:18,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874704820] [2020-12-09 05:27:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:18,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874704820] [2020-12-09 05:27:18,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:18,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:27:18,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973483362] [2020-12-09 05:27:18,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:27:18,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:18,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:27:18,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:27:18,999 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 05:27:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,021 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-12-09 05:27:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:27:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,024 INFO L225 Difference]: With dead ends: 346 [2020-12-09 05:27:19,024 INFO L226 Difference]: Without dead ends: 282 [2020-12-09 05:27:19,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-09 05:27:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-09 05:27:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-09 05:27:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-12-09 05:27:19,041 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-12-09 05:27:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,041 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-12-09 05:27:19,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:27:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-12-09 05:27:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:27:19,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:27:19,043 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1443401920, now seen corresponding path program 1 times [2020-12-09 05:27:19,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288997880] [2020-12-09 05:27:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288997880] [2020-12-09 05:27:19,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:27:19,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534699261] [2020-12-09 05:27:19,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:27:19,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:27:19,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:27:19,098 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-12-09 05:27:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,123 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-12-09 05:27:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 05:27:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,125 INFO L225 Difference]: With dead ends: 277 [2020-12-09 05:27:19,125 INFO L226 Difference]: Without dead ends: 213 [2020-12-09 05:27:19,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-09 05:27:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-12-09 05:27:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-09 05:27:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-12-09 05:27:19,137 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-12-09 05:27:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,137 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-12-09 05:27:19,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:27:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-12-09 05:27:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:27:19,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:27:19,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1084426668, now seen corresponding path program 1 times [2020-12-09 05:27:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96367261] [2020-12-09 05:27:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96367261] [2020-12-09 05:27:19,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:27:19,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709795655] [2020-12-09 05:27:19,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:27:19,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:27:19,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:27:19,200 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 4 states. [2020-12-09 05:27:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,230 INFO L93 Difference]: Finished difference Result 323 states and 755 transitions. [2020-12-09 05:27:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 05:27:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,233 INFO L225 Difference]: With dead ends: 323 [2020-12-09 05:27:19,233 INFO L226 Difference]: Without dead ends: 267 [2020-12-09 05:27:19,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-09 05:27:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 243. [2020-12-09 05:27:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 05:27:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 589 transitions. [2020-12-09 05:27:19,244 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 589 transitions. Word has length 12 [2020-12-09 05:27:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,244 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 589 transitions. [2020-12-09 05:27:19,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:27:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 589 transitions. [2020-12-09 05:27:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:27:19,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:27:19,246 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,247 INFO L82 PathProgramCache]: Analyzing trace with hash -465965508, now seen corresponding path program 1 times [2020-12-09 05:27:19,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947380601] [2020-12-09 05:27:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947380601] [2020-12-09 05:27:19,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:27:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029052408] [2020-12-09 05:27:19,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:27:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:27:19,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,302 INFO L87 Difference]: Start difference. First operand 243 states and 589 transitions. Second operand 5 states. [2020-12-09 05:27:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,340 INFO L93 Difference]: Finished difference Result 211 states and 463 transitions. [2020-12-09 05:27:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:27:19,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:27:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,342 INFO L225 Difference]: With dead ends: 211 [2020-12-09 05:27:19,342 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 05:27:19,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:27:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 05:27:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2020-12-09 05:27:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-09 05:27:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 332 transitions. [2020-12-09 05:27:19,348 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 332 transitions. Word has length 12 [2020-12-09 05:27:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,348 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 332 transitions. [2020-12-09 05:27:19,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:27:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 332 transitions. [2020-12-09 05:27:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:27:19,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:27:19,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1982160192, now seen corresponding path program 1 times [2020-12-09 05:27:19,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484863940] [2020-12-09 05:27:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484863940] [2020-12-09 05:27:19,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:27:19,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741995919] [2020-12-09 05:27:19,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:27:19,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:27:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:27:19,413 INFO L87 Difference]: Start difference. First operand 156 states and 332 transitions. Second operand 6 states. [2020-12-09 05:27:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,448 INFO L93 Difference]: Finished difference Result 139 states and 296 transitions. [2020-12-09 05:27:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:27:19,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 05:27:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,449 INFO L225 Difference]: With dead ends: 139 [2020-12-09 05:27:19,449 INFO L226 Difference]: Without dead ends: 109 [2020-12-09 05:27:19,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:27:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-09 05:27:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-12-09 05:27:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-09 05:27:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 195 transitions. [2020-12-09 05:27:19,451 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 195 transitions. Word has length 15 [2020-12-09 05:27:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,452 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 195 transitions. [2020-12-09 05:27:19,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:27:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 195 transitions. [2020-12-09 05:27:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:27:19,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:27:19,453 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1206418128, now seen corresponding path program 1 times [2020-12-09 05:27:19,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35096592] [2020-12-09 05:27:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35096592] [2020-12-09 05:27:19,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:27:19,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250070879] [2020-12-09 05:27:19,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:27:19,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:27:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,492 INFO L87 Difference]: Start difference. First operand 93 states and 195 transitions. Second operand 5 states. [2020-12-09 05:27:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,514 INFO L93 Difference]: Finished difference Result 115 states and 233 transitions. [2020-12-09 05:27:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 05:27:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,515 INFO L225 Difference]: With dead ends: 115 [2020-12-09 05:27:19,515 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 05:27:19,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:27:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 05:27:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-09 05:27:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 05:27:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-09 05:27:19,518 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 18 [2020-12-09 05:27:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,518 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-09 05:27:19,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:27:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-09 05:27:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:27:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:27:19,519 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash 785508606, now seen corresponding path program 2 times [2020-12-09 05:27:19,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471249475] [2020-12-09 05:27:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471249475] [2020-12-09 05:27:19,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:27:19,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987676394] [2020-12-09 05:27:19,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:27:19,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:27:19,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,570 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 5 states. [2020-12-09 05:27:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,591 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-09 05:27:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 05:27:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,591 INFO L225 Difference]: With dead ends: 67 [2020-12-09 05:27:19,592 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 05:27:19,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:27:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 05:27:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 05:27:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 05:27:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-09 05:27:19,593 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-09 05:27:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,593 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-09 05:27:19,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:27:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-09 05:27:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:27:19,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:27:19,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:27:19,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:27:19,594 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:27:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:27:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1230604400, now seen corresponding path program 3 times [2020-12-09 05:27:19,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:27:19,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508581996] [2020-12-09 05:27:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:27:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:27:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:27:19,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508581996] [2020-12-09 05:27:19,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:27:19,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:27:19,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823963141] [2020-12-09 05:27:19,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:27:19,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:27:19,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:27:19,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:27:19,631 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-09 05:27:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:27:19,652 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-09 05:27:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:27:19,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 05:27:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:27:19,652 INFO L225 Difference]: With dead ends: 36 [2020-12-09 05:27:19,652 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:27:19,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:27:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:27:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:27:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:27:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:27:19,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 05:27:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:27:19,653 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:27:19,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:27:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:27:19,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:27:19,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:27:19,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:27:19 BasicIcfg [2020-12-09 05:27:19,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:27:19,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:27:19,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:27:19,657 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:27:19,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:27:16" (3/4) ... [2020-12-09 05:27:19,660 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:27:19,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 05:27:19,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 05:27:19,667 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 05:27:19,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 05:27:19,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:27:19,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:27:19,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:27:19,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48998cec-9a3a-41cc-a99b-9c8576cdd072/bin/utaipan/witness.graphml [2020-12-09 05:27:19,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:27:19,707 INFO L168 Benchmark]: Toolchain (without parser) took 3845.15 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 54.0 MB in the beginning and 73.3 MB in the end (delta: -19.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,707 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 44.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:27:19,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.51 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 42.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 86.0 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,709 INFO L168 Benchmark]: Boogie Preprocessor took 17.40 ms. Allocated memory is still 86.0 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:27:19,709 INFO L168 Benchmark]: RCFGBuilder took 300.32 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 38.7 MB in the beginning and 81.7 MB in the end (delta: -42.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,710 INFO L168 Benchmark]: TraceAbstraction took 3076.20 ms. Allocated memory is still 119.5 MB. Free memory was 80.7 MB in the beginning and 75.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,710 INFO L168 Benchmark]: Witness Printer took 49.12 ms. Allocated memory is still 119.5 MB. Free memory was 75.4 MB in the beginning and 73.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:27:19,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 44.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.51 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 42.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.87 ms. Allocated memory is still 86.0 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.40 ms. Allocated memory is still 86.0 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 300.32 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 38.7 MB in the beginning and 81.7 MB in the end (delta: -42.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3076.20 ms. Allocated memory is still 119.5 MB. Free memory was 80.7 MB in the beginning and 75.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 49.12 ms. Allocated memory is still 119.5 MB. Free memory was 75.4 MB in the beginning and 73.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 835 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2576 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 200 SDtfs, 167 SDslu, 330 SDs, 0 SdLazy, 126 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 44 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 5031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...