./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/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 7a6b87fc48455dc53e38f1c353a311cdcd826300 ................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:04:40,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:04:40,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:04:40,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:04:40,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:04:40,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:04:40,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:04:40,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:04:40,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:04:40,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:04:40,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:04:40,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:04:40,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:04:40,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:04:40,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:04:40,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:04:40,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:04:40,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:04:40,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:04:40,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:04:40,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:04:40,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:04:40,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:04:40,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:04:40,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:04:40,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:04:40,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:04:40,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:04:40,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:04:40,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:04:40,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:04:40,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:04:40,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:04:40,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:04:40,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:04:40,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:04:40,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:04:40,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:04:40,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:04:40,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:04:40,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:04:40,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:04:40,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:04:40,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:04:40,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:04:40,550 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:04:40,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:04:40,551 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:04:40,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:04:40,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:04:40,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:04:40,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:04:40,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:04:40,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:04:40,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:04:40,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:04:40,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:04:40,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:04:40,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:04:40,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:04:40,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:04:40,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:04:40,556 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_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a6b87fc48455dc53e38f1c353a311cdcd826300 [2020-12-09 14:04:40,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:04:40,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:04:40,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:04:40,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:04:40,756 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:04:40,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/../../sv-benchmarks/c/pthread/stateful01-1.i [2020-12-09 14:04:40,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/data/82c894387/c1c1041119c24cabb071243c6a759074/FLAG7a321ff1f [2020-12-09 14:04:41,197 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:04:41,198 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/sv-benchmarks/c/pthread/stateful01-1.i [2020-12-09 14:04:41,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/data/82c894387/c1c1041119c24cabb071243c6a759074/FLAG7a321ff1f [2020-12-09 14:04:41,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/data/82c894387/c1c1041119c24cabb071243c6a759074 [2020-12-09 14:04:41,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:04:41,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:04:41,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:04:41,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:04:41,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:04:41,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbc7023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41, skipping insertion in model container [2020-12-09 14:04:41,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:04:41,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:04:41,519 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2020-12-09 14:04:41,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:04:41,530 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:04:41,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2020-12-09 14:04:41,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:04:41,621 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:04:41,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41 WrapperNode [2020-12-09 14:04:41,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:04:41,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:04:41,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:04:41,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:04:41,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:04:41,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:04:41,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:04:41,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:04:41,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... [2020-12-09 14:04:41,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:04:41,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:04:41,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:04:41,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:04:41,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:04:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 14:04:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-12-09 14:04:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-12-09 14:04:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-12-09 14:04:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:04:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:04:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:04:41,745 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 14:04:41,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:04:41,999 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 14:04:42,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:04:42 BoogieIcfgContainer [2020-12-09 14:04:42,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:04:42,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:04:42,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:04:42,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:04:42,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:04:41" (1/3) ... [2020-12-09 14:04:42,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a851ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:04:42, skipping insertion in model container [2020-12-09 14:04:42,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:04:41" (2/3) ... [2020-12-09 14:04:42,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a851ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:04:42, skipping insertion in model container [2020-12-09 14:04:42,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:04:42" (3/3) ... [2020-12-09 14:04:42,008 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2020-12-09 14:04:42,021 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 14:04:42,021 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:04:42,024 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:04:42,025 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,054 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,054 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,054 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,054 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,054 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 14:04:42,065 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-12-09 14:04:42,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 14:04:42,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:04:42,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:04:42,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:04:42,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:04:42,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:04:42,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:04:42,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:04:42,086 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:04:42,094 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 14:04:42,096 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 83 transitions, 188 flow [2020-12-09 14:04:42,098 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 83 transitions, 188 flow [2020-12-09 14:04:42,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2020-12-09 14:04:42,144 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-09 14:04:42,145 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-12-09 14:04:42,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 83 events. 2/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2020-12-09 14:04:42,149 INFO L116 LiptonReduction]: Number of co-enabled transitions 680 [2020-12-09 14:04:44,387 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-12-09 14:04:44,490 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-12-09 14:04:44,747 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-12-09 14:04:44,863 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-12-09 14:04:45,469 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2020-12-09 14:04:45,735 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-12-09 14:04:46,311 WARN L197 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2020-12-09 14:04:46,525 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-12-09 14:04:46,528 INFO L131 LiptonReduction]: Checked pairs total: 3225 [2020-12-09 14:04:46,528 INFO L133 LiptonReduction]: Total number of compositions: 57 [2020-12-09 14:04:46,537 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-12-09 14:04:46,548 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-12-09 14:04:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-12-09 14:04:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 14:04:46,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:04:46,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:04:46,556 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:04:46,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:04:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 766403352, now seen corresponding path program 1 times [2020-12-09 14:04:46,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:04:46,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748595123] [2020-12-09 14:04:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:04:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:04:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:04:46,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748595123] [2020-12-09 14:04:46,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:04:46,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:04:46,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196217683] [2020-12-09 14:04:46,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:04:46,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:04:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:04:46,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:04:46,724 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-12-09 14:04:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:04:46,760 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2020-12-09 14:04:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:04:46,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-09 14:04:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:04:46,768 INFO L225 Difference]: With dead ends: 150 [2020-12-09 14:04:46,768 INFO L226 Difference]: Without dead ends: 149 [2020-12-09 14:04:46,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:04:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-09 14:04:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-09 14:04:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-09 14:04:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2020-12-09 14:04:46,800 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2020-12-09 14:04:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:04:46,800 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2020-12-09 14:04:46,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:04:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2020-12-09 14:04:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 14:04:46,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:04:46,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:04:46,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:04:46,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:04:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:04:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -403540622, now seen corresponding path program 1 times [2020-12-09 14:04:46,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:04:46,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020462465] [2020-12-09 14:04:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:04:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:04:46,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:04:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:04:46,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:04:46,887 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 14:04:46,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:04:46,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:04:46,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:04:46 BasicIcfg [2020-12-09 14:04:46,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:04:46,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:04:46,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:04:46,924 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:04:46,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:04:42" (3/4) ... [2020-12-09 14:04:46,926 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 14:04:46,966 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_97d3604c-530d-49a0-bfe0-06f2ec91f4d9/bin/utaipan/witness.graphml [2020-12-09 14:04:46,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:04:46,967 INFO L168 Benchmark]: Toolchain (without parser) took 5741.04 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 71.5 MB in the beginning and 67.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,968 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 109.1 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:04:46,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.64 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 66.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.64 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 65.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,969 INFO L168 Benchmark]: Boogie Preprocessor took 24.18 ms. Allocated memory is still 109.1 MB. Free memory was 65.2 MB in the beginning and 63.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,969 INFO L168 Benchmark]: RCFGBuilder took 312.93 ms. Allocated memory is still 109.1 MB. Free memory was 63.7 MB in the beginning and 83.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,970 INFO L168 Benchmark]: TraceAbstraction took 4921.48 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 83.1 MB in the beginning and 73.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,970 INFO L168 Benchmark]: Witness Printer took 42.55 ms. Allocated memory is still 132.1 MB. Free memory was 73.9 MB in the beginning and 67.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:04:46,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 109.1 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.64 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 66.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.64 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 65.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.18 ms. Allocated memory is still 109.1 MB. Free memory was 65.2 MB in the beginning and 63.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.93 ms. Allocated memory is still 109.1 MB. Free memory was 63.7 MB in the beginning and 83.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4921.48 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 83.1 MB in the beginning and 73.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * Witness Printer took 42.55 ms. Allocated memory is still 132.1 MB. Free memory was 73.9 MB in the beginning and 67.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 473 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 181 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 87 PlacesBefore, 35 PlacesAfterwards, 83 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 3225 MoverChecksTotal - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={6:0}, mb={10:0}] [L697] 1 data1++ [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, data2++=10, ma={6:0}, mb={10:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, data2++=10, ma={6:0}, mb={10:0}] [L723] 0 \read(t1) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, data2++=10, ma={6:0}, mb={10:0}] [L700] 1 data2++ [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={6:0}, mb={10:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={6:0}, mb={10:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={6:0}, mb={10:0}] [L712] 2 return 0; [L724] 0 \read(t2) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={6:0}, mb={10:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={6:0}, mb={10:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={6:0}, mb={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 31 SDtfs, 10 SDslu, 13 SDs, 0 SdLazy, 9 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...