./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_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_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI --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 d7b99eb0691db756f3c08dc52ba10dd69081a5de ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:01,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:01,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:01,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:01,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:01,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:01,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:01,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:01,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:01,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:01,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:01,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:01,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:01,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:01,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:01,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:01,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:01,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:01,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:01,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:01,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:01,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:01,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:01,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:01,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:01,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:01,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:01,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:01,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:01,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:01,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:01,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:01,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:01,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:01,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:01,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:01,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:01,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:01,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:01,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:01,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:01,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:01,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:01,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:01,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:01,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:01,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:01,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:01,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:01,363 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:01,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:01,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:01,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:01,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:01,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:01,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:01,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:01,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:01,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:01,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:01,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:01,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:01,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:01,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:01,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:01,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:01,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:01,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:01,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:01,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:01,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:01,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:01,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:01,378 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_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b99eb0691db756f3c08dc52ba10dd69081a5de [2021-10-11 02:24:01,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:01,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:01,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:01,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:01,714 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:01,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-10-11 02:24:01,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/data/b0a4dc7c9/7b8e37fe17394c0fb1d82b0ca81cd118/FLAGdc3f7372d [2021-10-11 02:24:02,346 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:02,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-10-11 02:24:02,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/data/b0a4dc7c9/7b8e37fe17394c0fb1d82b0ca81cd118/FLAGdc3f7372d [2021-10-11 02:24:02,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/data/b0a4dc7c9/7b8e37fe17394c0fb1d82b0ca81cd118 [2021-10-11 02:24:02,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:02,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:02,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:02,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:02,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:02,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2937b34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02, skipping insertion in model container [2021-10-11 02:24:02,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:02,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:02,918 WARN L226 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_295056da-3b72-49fa-893a-551eb7872ad2/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i[949,962] [2021-10-11 02:24:03,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:03,093 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:03,110 WARN L226 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_295056da-3b72-49fa-893a-551eb7872ad2/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i[949,962] [2021-10-11 02:24:03,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:03,257 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:03,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03 WrapperNode [2021-10-11 02:24:03,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:03,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:03,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:03,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:03,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:03,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:03,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:03,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:03,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:03,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:03,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:03,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:03,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:24:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:24:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:03,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:03,464 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:24:03,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:03,820 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:24:03,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03 BoogieIcfgContainer [2021-10-11 02:24:03,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:03,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:03,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:03,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:03,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:02" (1/3) ... [2021-10-11 02:24:03,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62337cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:03, skipping insertion in model container [2021-10-11 02:24:03,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (2/3) ... [2021-10-11 02:24:03,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62337cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:03, skipping insertion in model container [2021-10-11 02:24:03,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03" (3/3) ... [2021-10-11 02:24:03,832 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2021-10-11 02:24:03,846 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:24:03,846 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:03,849 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:03,850 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:24:03,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,881 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,881 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,885 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,886 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,886 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:03,904 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:24:03,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:24:03,963 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:03,963 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:03,963 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:03,964 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:03,964 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:03,964 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:03,964 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:03,964 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:03,976 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:24:03,978 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 02:24:03,981 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 02:24:03,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-10-11 02:24:04,023 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-10-11 02:24:04,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:24:04,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-11 02:24:04,030 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-10-11 02:24:06,782 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:24:07,078 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 02:24:07,186 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-10-11 02:24:07,214 INFO L131 LiptonReduction]: Checked pairs total: 1378 [2021-10-11 02:24:07,214 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-10-11 02:24:07,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2021-10-11 02:24:07,232 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2021-10-11 02:24:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2021-10-11 02:24:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:24:07,240 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:07,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1925010784, now seen corresponding path program 1 times [2021-10-11 02:24:07,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:07,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949982276] [2021-10-11 02:24:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949982276] [2021-10-11 02:24:07,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:07,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:24:07,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374908676] [2021-10-11 02:24:07,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:07,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:07,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:07,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:07,505 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2021-10-11 02:24:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:07,543 INFO L93 Difference]: Finished difference Result 104 states and 207 transitions. [2021-10-11 02:24:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:07,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:24:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:07,555 INFO L225 Difference]: With dead ends: 104 [2021-10-11 02:24:07,555 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:24:07,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:24:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-10-11 02:24:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:24:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 109 transitions. [2021-10-11 02:24:07,597 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 109 transitions. Word has length 6 [2021-10-11 02:24:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:07,598 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 109 transitions. [2021-10-11 02:24:07,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 109 transitions. [2021-10-11 02:24:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:07,599 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:07,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:07,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 454629136, now seen corresponding path program 1 times [2021-10-11 02:24:07,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:07,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256692049] [2021-10-11 02:24:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:07,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256692049] [2021-10-11 02:24:07,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:07,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:24:07,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676731583] [2021-10-11 02:24:07,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:07,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:07,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:07,708 INFO L87 Difference]: Start difference. First operand 57 states and 109 transitions. Second operand 3 states. [2021-10-11 02:24:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:07,719 INFO L93 Difference]: Finished difference Result 54 states and 101 transitions. [2021-10-11 02:24:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:07,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:24:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:07,722 INFO L225 Difference]: With dead ends: 54 [2021-10-11 02:24:07,723 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:24:07,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:24:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-11 02:24:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 02:24:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2021-10-11 02:24:07,743 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2021-10-11 02:24:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:07,744 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2021-10-11 02:24:07,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2021-10-11 02:24:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:07,745 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:07,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:07,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 454206947, now seen corresponding path program 1 times [2021-10-11 02:24:07,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:07,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46525828] [2021-10-11 02:24:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46525828] [2021-10-11 02:24:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:07,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656779290] [2021-10-11 02:24:07,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:07,862 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 4 states. [2021-10-11 02:24:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:07,888 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2021-10-11 02:24:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:07,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:24:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:07,893 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:24:07,893 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:24:07,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:24:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 02:24:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:24:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2021-10-11 02:24:07,911 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 7 [2021-10-11 02:24:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:07,911 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2021-10-11 02:24:07,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2021-10-11 02:24:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:07,912 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:07,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:07,913 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1208600435, now seen corresponding path program 1 times [2021-10-11 02:24:07,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:07,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73158250] [2021-10-11 02:24:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:08,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73158250] [2021-10-11 02:24:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:08,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589496292] [2021-10-11 02:24:08,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:08,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:08,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:08,015 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand 4 states. [2021-10-11 02:24:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:08,048 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2021-10-11 02:24:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:08,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:08,050 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:24:08,050 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:24:08,050 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 [2021-10-11 02:24:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:24:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 02:24:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:24:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 93 transitions. [2021-10-11 02:24:08,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 93 transitions. Word has length 8 [2021-10-11 02:24:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:08,064 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 93 transitions. [2021-10-11 02:24:08,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 93 transitions. [2021-10-11 02:24:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:08,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:08,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:08,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:08,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:08,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:08,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1195512545, now seen corresponding path program 2 times [2021-10-11 02:24:08,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:08,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497674671] [2021-10-11 02:24:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:08,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497674671] [2021-10-11 02:24:08,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:08,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:08,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092193649] [2021-10-11 02:24:08,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:08,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:08,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:08,167 INFO L87 Difference]: Start difference. First operand 51 states and 93 transitions. Second operand 4 states. [2021-10-11 02:24:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:08,182 INFO L93 Difference]: Finished difference Result 52 states and 85 transitions. [2021-10-11 02:24:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:08,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:08,184 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:24:08,184 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:24:08,184 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 [2021-10-11 02:24:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:24:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 02:24:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:24:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2021-10-11 02:24:08,187 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 43 transitions. Word has length 8 [2021-10-11 02:24:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:08,187 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 43 transitions. [2021-10-11 02:24:08,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2021-10-11 02:24:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:08,188 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:08,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:08,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:08,189 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:08,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1199016759, now seen corresponding path program 1 times [2021-10-11 02:24:08,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:08,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511927931] [2021-10-11 02:24:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:08,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511927931] [2021-10-11 02:24:08,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:08,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:08,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180849253] [2021-10-11 02:24:08,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:08,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:08,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:08,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:08,246 INFO L87 Difference]: Start difference. First operand 28 states and 43 transitions. Second operand 4 states. [2021-10-11 02:24:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:08,263 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-11 02:24:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:08,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:24:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:08,265 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:24:08,265 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:24:08,265 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 [2021-10-11 02:24:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:24:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:24:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2021-10-11 02:24:08,268 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2021-10-11 02:24:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:08,268 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-11 02:24:08,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2021-10-11 02:24:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:08,269 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:08,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:08,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:08,269 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1520437605, now seen corresponding path program 1 times [2021-10-11 02:24:08,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:08,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974033599] [2021-10-11 02:24:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:08,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974033599] [2021-10-11 02:24:08,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:08,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:08,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107317116] [2021-10-11 02:24:08,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:08,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:08,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:08,333 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 5 states. [2021-10-11 02:24:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:08,349 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-10-11 02:24:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:08,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:24:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:08,350 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:24:08,350 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:08,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:08,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 02:24:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:08,353 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:08,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:08,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:08,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:08,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:08 BasicIcfg [2021-10-11 02:24:08,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:08,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:08,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:08,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:08,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03" (3/4) ... [2021-10-11 02:24:08,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:08,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:24:08,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:24:08,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:24:08,380 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:08,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:08,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:08,460 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295056da-3b72-49fa-893a-551eb7872ad2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:08,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:08,462 INFO L168 Benchmark]: Toolchain (without parser) took 5803.34 ms. Allocated memory was 121.6 MB in the beginning and 195.0 MB in the end (delta: 73.4 MB). Free memory was 91.4 MB in the beginning and 79.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,462 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.05 ms. Allocated memory is still 121.6 MB. Free memory was 91.1 MB in the beginning and 77.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.92 ms. Allocated memory is still 121.6 MB. Free memory was 77.3 MB in the beginning and 75.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,470 INFO L168 Benchmark]: Boogie Preprocessor took 25.43 ms. Allocated memory is still 121.6 MB. Free memory was 75.2 MB in the beginning and 73.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:08,471 INFO L168 Benchmark]: RCFGBuilder took 445.20 ms. Allocated memory is still 121.6 MB. Free memory was 73.8 MB in the beginning and 94.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,472 INFO L168 Benchmark]: TraceAbstraction took 4532.63 ms. Allocated memory was 121.6 MB in the beginning and 195.0 MB in the end (delta: 73.4 MB). Free memory was 93.4 MB in the beginning and 82.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,472 INFO L168 Benchmark]: Witness Printer took 103.01 ms. Allocated memory is still 195.0 MB. Free memory was 82.5 MB in the beginning and 79.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:08,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.05 ms. Allocated memory is still 121.6 MB. Free memory was 91.1 MB in the beginning and 77.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.92 ms. Allocated memory is still 121.6 MB. Free memory was 77.3 MB in the beginning and 75.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.43 ms. Allocated memory is still 121.6 MB. Free memory was 75.2 MB in the beginning and 73.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 445.20 ms. Allocated memory is still 121.6 MB. Free memory was 73.8 MB in the beginning and 94.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4532.63 ms. Allocated memory was 121.6 MB in the beginning and 195.0 MB in the end (delta: 73.4 MB). Free memory was 93.4 MB in the beginning and 82.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. * Witness Printer took 103.01 ms. Allocated memory is still 195.0 MB. Free memory was 82.5 MB in the beginning and 79.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 473 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 65 PlacesBefore, 22 PlacesAfterwards, 60 TransitionsBefore, 16 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1378 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 86 SDtfs, 58 SDslu, 81 SDs, 0 SdLazy, 39 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...