./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/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 10dc657ec2d146eedbc7784e1d498c26d2be3b10 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:59:36,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:36,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:36,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:36,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:36,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:36,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:36,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:36,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:36,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:36,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:36,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:36,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:36,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:36,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:36,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:36,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:36,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:36,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:36,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:36,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:36,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:36,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:36,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:36,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:36,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:36,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:36,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:36,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:36,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:36,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:36,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:36,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:36,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:36,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:36,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:36,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:36,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:36,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:36,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:36,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:36,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:59:36,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:36,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:36,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:36,363 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:36,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:36,364 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:36,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:36,364 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:36,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:36,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:36,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:36,365 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:36,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:36,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:36,366 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:36,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:36,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:36,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:36,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:36,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:36,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:59:36,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:36,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:59:36,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:36,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:36,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:59:36,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:36,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:59:36,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:36,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:36,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:36,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:36,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:36,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:36,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:59:36,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:36,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:36,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:59:36,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:36,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:36,371 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_5f80e381-bd83-4f87-84ed-84dcc887b444/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dc657ec2d146eedbc7784e1d498c26d2be3b10 [2020-11-22 12:59:36,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:36,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:36,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:36,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:36,688 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:36,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2020-11-22 12:59:36,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/data/33e18a699/40e626d084f847e2910eb2490d430308/FLAGe2d1ca8ce [2020-11-22 12:59:37,376 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:37,380 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2020-11-22 12:59:37,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/data/33e18a699/40e626d084f847e2910eb2490d430308/FLAGe2d1ca8ce [2020-11-22 12:59:37,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/data/33e18a699/40e626d084f847e2910eb2490d430308 [2020-11-22 12:59:37,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:37,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:37,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:37,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:37,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:37,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603972cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37, skipping insertion in model container [2020-11-22 12:59:37,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:37,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:38,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:38,154 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:38,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:38,311 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:38,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38 WrapperNode [2020-11-22 12:59:38,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:38,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:38,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:38,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:38,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:38,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:38,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:38,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:38,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:38,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:38,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:38,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:38,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/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 [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:59:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:59:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:59:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:59:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:59:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:59:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:59:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:59:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:38,491 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:59:39,104 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:39,105 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:59:39,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39 BoogieIcfgContainer [2020-11-22 12:59:39,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:39,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:39,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:39,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:39,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:37" (1/3) ... [2020-11-22 12:59:39,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e877d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (2/3) ... [2020-11-22 12:59:39,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e877d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/3) ... [2020-11-22 12:59:39,119 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-11-22 12:59:39,129 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:59:39,129 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:39,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:59:39,134 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:59:39,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,178 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,180 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,181 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,203 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:59:39,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:59:39,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:39,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:39,245 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:39,245 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:39,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:39,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:39,246 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:39,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:39,260 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:59:39,263 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-22 12:59:39,267 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-22 12:59:39,268 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-22 12:59:39,336 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-22 12:59:39,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:59:39,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-22 12:59:39,346 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-11-22 12:59:41,549 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-22 12:59:41,676 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-22 12:59:41,691 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-22 12:59:41,691 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-22 12:59:41,697 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-22 12:59:41,733 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-11-22 12:59:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-11-22 12:59:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:59:41,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:41,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:41,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-11-22 12:59:41,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:41,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658477339] [2020-11-22 12:59:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:41,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658477339] [2020-11-22 12:59:41,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:42,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510666185] [2020-11-22 12:59:42,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:59:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:59:42,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:59:42,022 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-11-22 12:59:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,068 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-22 12:59:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:59:42,069 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 12:59:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,088 INFO L225 Difference]: With dead ends: 282 [2020-11-22 12:59:42,089 INFO L226 Difference]: Without dead ends: 234 [2020-11-22 12:59:42,093 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 [2020-11-22 12:59:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-22 12:59:42,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-22 12:59:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-22 12:59:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-11-22 12:59:42,175 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-11-22 12:59:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,176 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-11-22 12:59:42,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:59:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-11-22 12:59:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:59:42,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:42,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-11-22 12:59:42,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879509355] [2020-11-22 12:59:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879509355] [2020-11-22 12:59:42,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:42,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715880123] [2020-11-22 12:59:42,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:42,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:42,327 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-11-22 12:59:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,353 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-11-22 12:59:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:42,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 12:59:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,359 INFO L225 Difference]: With dead ends: 180 [2020-11-22 12:59:42,360 INFO L226 Difference]: Without dead ends: 180 [2020-11-22 12:59:42,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-22 12:59:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-22 12:59:42,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-22 12:59:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-22 12:59:42,377 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-11-22 12:59:42,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,378 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-22 12:59:42,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-22 12:59:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:42,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:42,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-11-22 12:59:42,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037209088] [2020-11-22 12:59:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037209088] [2020-11-22 12:59:42,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:42,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152840216] [2020-11-22 12:59:42,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:42,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:42,480 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-11-22 12:59:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,509 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-11-22 12:59:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:42,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:59:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,512 INFO L225 Difference]: With dead ends: 117 [2020-11-22 12:59:42,512 INFO L226 Difference]: Without dead ends: 117 [2020-11-22 12:59:42,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-22 12:59:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-11-22 12:59:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-22 12:59:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-11-22 12:59:42,528 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-11-22 12:59:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,529 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-11-22 12:59:42,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-11-22 12:59:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:59:42,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:42,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-11-22 12:59:42,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274382659] [2020-11-22 12:59:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274382659] [2020-11-22 12:59:42,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:59:42,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767427882] [2020-11-22 12:59:42,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:42,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:42,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:42,616 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-11-22 12:59:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,654 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-11-22 12:59:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:42,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-22 12:59:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,656 INFO L225 Difference]: With dead ends: 93 [2020-11-22 12:59:42,656 INFO L226 Difference]: Without dead ends: 93 [2020-11-22 12:59:42,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-22 12:59:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-22 12:59:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-22 12:59:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-11-22 12:59:42,662 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-11-22 12:59:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,665 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-11-22 12:59:42,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-11-22 12:59:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:59:42,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:42,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-11-22 12:59:42,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63054908] [2020-11-22 12:59:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63054908] [2020-11-22 12:59:42,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:42,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154411093] [2020-11-22 12:59:42,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:42,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:42,766 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 4 states. [2020-11-22 12:59:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,792 INFO L93 Difference]: Finished difference Result 111 states and 233 transitions. [2020-11-22 12:59:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:42,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:59:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,793 INFO L225 Difference]: With dead ends: 111 [2020-11-22 12:59:42,794 INFO L226 Difference]: Without dead ends: 77 [2020-11-22 12:59:42,794 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 [2020-11-22 12:59:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-22 12:59:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-22 12:59:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-22 12:59:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 159 transitions. [2020-11-22 12:59:42,799 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 159 transitions. Word has length 17 [2020-11-22 12:59:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,799 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 159 transitions. [2020-11-22 12:59:42,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 159 transitions. [2020-11-22 12:59:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:59:42,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:42,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1741772653, now seen corresponding path program 2 times [2020-11-22 12:59:42,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144327158] [2020-11-22 12:59:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144327158] [2020-11-22 12:59:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007238031] [2020-11-22 12:59:42,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:42,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:42,897 INFO L87 Difference]: Start difference. First operand 77 states and 159 transitions. Second operand 5 states. [2020-11-22 12:59:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,943 INFO L93 Difference]: Finished difference Result 109 states and 220 transitions. [2020-11-22 12:59:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:42,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-22 12:59:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,945 INFO L225 Difference]: With dead ends: 109 [2020-11-22 12:59:42,945 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 12:59:42,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 12:59:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-22 12:59:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:59:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-11-22 12:59:42,948 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-11-22 12:59:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,948 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-11-22 12:59:42,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-11-22 12:59:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:59:42,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:42,949 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-11-22 12:59:42,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611030862] [2020-11-22 12:59:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:43,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611030862] [2020-11-22 12:59:43,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:43,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451685434] [2020-11-22 12:59:43,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:43,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:43,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:43,032 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-11-22 12:59:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,090 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-11-22 12:59:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:43,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-22 12:59:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,090 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:59:43,090 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:43,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:43,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-22 12:59:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,092 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:43,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:43,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:43,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:59:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:43 BasicIcfg [2020-11-22 12:59:43,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:43,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:43,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:43,096 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:43,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/4) ... [2020-11-22 12:59:43,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:43,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:59:43,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:59:43,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:59:43,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:59:43,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:59:43,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:43,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:43,162 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f80e381-bd83-4f87-84ed-84dcc887b444/bin/utaipan/witness.graphml [2020-11-22 12:59:43,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:43,164 INFO L168 Benchmark]: Toolchain (without parser) took 5514.29 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 55.1 MB in the beginning and 104.4 MB in the end (delta: -49.3 MB). Peak memory consumption was 71.0 kB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,164 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:43,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.22 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.1 MB in the beginning and 57.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.07 ms. Allocated memory is still 100.7 MB. Free memory was 57.3 MB in the beginning and 55.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,167 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 54.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:43,167 INFO L168 Benchmark]: RCFGBuilder took 703.59 ms. Allocated memory is still 100.7 MB. Free memory was 54.3 MB in the beginning and 74.7 MB in the end (delta: -20.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,168 INFO L168 Benchmark]: TraceAbstraction took 3982.67 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 73.9 MB in the beginning and 106.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,169 INFO L168 Benchmark]: Witness Printer took 66.97 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:43,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 660.22 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.1 MB in the beginning and 57.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.07 ms. Allocated memory is still 100.7 MB. Free memory was 57.3 MB in the beginning and 55.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 54.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 703.59 ms. Allocated memory is still 100.7 MB. Free memory was 54.3 MB in the beginning and 74.7 MB in the end (delta: -20.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3982.67 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 73.9 MB in the beginning and 106.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 65.9 MB. Max. memory is 16.1 GB. * Witness Printer took 66.97 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 104.4 MB in the end (delta: 2.1 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 945 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 111 SDtfs, 79 SDslu, 136 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 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...