./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-join.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_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/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 158852c017926f5105117106d37baef2e7c75d8b .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:03:58,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:03:58,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:03:58,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:03:58,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:03:58,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:03:58,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:03:58,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:03:58,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:03:58,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:03:58,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:03:58,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:03:58,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:03:58,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:03:58,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:03:58,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:03:58,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:03:58,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:03:58,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:03:58,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:03:58,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:03:58,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:03:58,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:03:58,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:03:58,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:03:58,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:03:58,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:03:58,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:03:58,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:03:58,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:03:58,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:03:58,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:03:58,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:03:58,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:03:58,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:03:58,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:03:58,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:03:58,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:03:58,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:03:58,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:03:58,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:03:58,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:03:58,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:03:58,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:03:58,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:03:58,749 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:03:58,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:03:58,749 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:03:58,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:03:58,749 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:03:58,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:03:58,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:03:58,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:03:58,750 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:03:58,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:03:58,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:03:58,750 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:03:58,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:03:58,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:03:58,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:03:58,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:03:58,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:03:58,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:03:58,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:03:58,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:03:58,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:03:58,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:03:58,753 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_db1e9cec-df38-4a98-8456-bfdb85e4f60c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158852c017926f5105117106d37baef2e7c75d8b [2020-12-09 07:03:58,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:03:58,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:03:58,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:03:58,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:03:58,982 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:03:58,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-12-09 07:03:59,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/data/e261648ba/d78dfd6298724c70980e1c782b9a00c9/FLAG61328673f [2020-12-09 07:03:59,499 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:03:59,500 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-12-09 07:03:59,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/data/e261648ba/d78dfd6298724c70980e1c782b9a00c9/FLAG61328673f [2020-12-09 07:03:59,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/data/e261648ba/d78dfd6298724c70980e1c782b9a00c9 [2020-12-09 07:03:59,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:03:59,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:03:59,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:03:59,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:03:59,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:03:59,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:03:59" (1/1) ... [2020-12-09 07:03:59,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e80d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:59, skipping insertion in model container [2020-12-09 07:03:59,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:03:59" (1/1) ... [2020-12-09 07:03:59,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:03:59,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:04:00,013 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_db1e9cec-df38-4a98-8456-bfdb85e4f60c/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2020-12-09 07:04:00,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:00,032 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:04:00,076 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_db1e9cec-df38-4a98-8456-bfdb85e4f60c/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2020-12-09 07:04:00,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:00,313 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:04:00,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00 WrapperNode [2020-12-09 07:04:00,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:04:00,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:00,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:04:00,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:04:00,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:00,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:04:00,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:04:00,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:04:00,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... [2020-12-09 07:04:00,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:04:00,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:04:00,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:04:00,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:04:00,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/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 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-09 07:04:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 07:04:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:04:00,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:04:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:04:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-12-09 07:04:00,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-12-09 07:04:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 07:04:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:04:00,473 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 07:04:00,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:04:00,852 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 07:04:00,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:00 BoogieIcfgContainer [2020-12-09 07:04:00,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:04:00,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:04:00,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:04:00,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:04:00,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:03:59" (1/3) ... [2020-12-09 07:04:00,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583cf9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:00, skipping insertion in model container [2020-12-09 07:04:00,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:00" (2/3) ... [2020-12-09 07:04:00,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583cf9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:00, skipping insertion in model container [2020-12-09 07:04:00,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:00" (3/3) ... [2020-12-09 07:04:00,861 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2020-12-09 07:04:00,874 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 07:04:00,874 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:04:00,878 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 07:04:00,879 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 07:04:00,903 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,903 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,904 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,904 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,905 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,908 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,908 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,909 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,909 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,909 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:04:00,913 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-09 07:04:00,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 07:04:00,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:04:00,937 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:04:00,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:04:00,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:04:00,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:04:00,938 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:04:00,938 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:04:00,938 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:04:00,948 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 07:04:00,950 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 87 transitions, 182 flow [2020-12-09 07:04:00,953 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 87 transitions, 182 flow [2020-12-09 07:04:00,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2020-12-09 07:04:00,994 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2020-12-09 07:04:00,995 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-12-09 07:04:00,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2020-12-09 07:04:00,999 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2020-12-09 07:04:03,564 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-09 07:04:03,730 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-12-09 07:04:03,948 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-12-09 07:04:04,200 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-12-09 07:04:04,640 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2020-12-09 07:04:04,799 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-12-09 07:04:05,204 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2020-12-09 07:04:05,384 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-12-09 07:04:05,631 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-12-09 07:04:05,737 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-09 07:04:06,018 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-12-09 07:04:06,155 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-09 07:04:06,157 INFO L131 LiptonReduction]: Checked pairs total: 311 [2020-12-09 07:04:06,157 INFO L133 LiptonReduction]: Total number of compositions: 100 [2020-12-09 07:04:06,161 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2020-12-09 07:04:06,165 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 23 states. [2020-12-09 07:04:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-09 07:04:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-12-09 07:04:06,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:06,169 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-12-09 07:04:06,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 358, now seen corresponding path program 1 times [2020-12-09 07:04:06,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:06,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228876900] [2020-12-09 07:04:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:06,310 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 07:04:06,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228876900] [2020-12-09 07:04:06,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:06,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2020-12-09 07:04:06,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026456760] [2020-12-09 07:04:06,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:04:06,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:04:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:04:06,326 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-09 07:04:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:06,334 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-12-09 07:04:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:04:06,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-12-09 07:04:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:06,340 INFO L225 Difference]: With dead ends: 20 [2020-12-09 07:04:06,340 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 07:04:06,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:04:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 07:04:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 07:04:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 07:04:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-09 07:04:06,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2020-12-09 07:04:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:06,361 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-09 07:04:06,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:04:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-09 07:04:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 07:04:06,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:06,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 07:04:06,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:04:06,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:06,363 INFO L82 PathProgramCache]: Analyzing trace with hash 356766, now seen corresponding path program 1 times [2020-12-09 07:04:06,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:06,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758968552] [2020-12-09 07:04:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:06,454 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 07:04:06,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758968552] [2020-12-09 07:04:06,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:06,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:06,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144033264] [2020-12-09 07:04:06,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:06,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:06,458 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-12-09 07:04:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:06,468 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-09 07:04:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:06,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 07:04:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:06,469 INFO L225 Difference]: With dead ends: 11 [2020-12-09 07:04:06,469 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 07:04:06,469 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 [2020-12-09 07:04:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 07:04:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 07:04:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 07:04:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-09 07:04:06,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2020-12-09 07:04:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:06,471 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-09 07:04:06,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-09 07:04:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:04:06,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:06,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:04:06,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:04:06,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash 339575351, now seen corresponding path program 1 times [2020-12-09 07:04:06,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:06,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557346248] [2020-12-09 07:04:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:06,543 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 07:04:06,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557346248] [2020-12-09 07:04:06,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:06,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:06,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25834647] [2020-12-09 07:04:06,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:06,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:06,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:06,546 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-12-09 07:04:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:06,555 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-12-09 07:04:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:06,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:04:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:06,556 INFO L225 Difference]: With dead ends: 10 [2020-12-09 07:04:06,556 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 07:04:06,556 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 [2020-12-09 07:04:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 07:04:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 07:04:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 07:04:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-09 07:04:06,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2020-12-09 07:04:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-09 07:04:06,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-09 07:04:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:04:06,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:06,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:04:06,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:04:06,559 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1936904376, now seen corresponding path program 1 times [2020-12-09 07:04:06,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:06,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271071958] [2020-12-09 07:04:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:04:06,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:04:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:04:06,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:04:06,636 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:04:06,636 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:04:06,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:04:06,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:04:06 BasicIcfg [2020-12-09 07:04:06,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:04:06,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:04:06,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:04:06,655 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:04:06,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:00" (3/4) ... [2020-12-09 07:04:06,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:04:06,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db1e9cec-df38-4a98-8456-bfdb85e4f60c/bin/utaipan/witness.graphml [2020-12-09 07:04:06,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:04:06,694 INFO L168 Benchmark]: Toolchain (without parser) took 7158.84 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 83.6 MB in the beginning and 93.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,694 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 75.5 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:04:06,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.78 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 83.2 MB in the beginning and 85.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.29 ms. Allocated memory is still 125.8 MB. Free memory was 85.3 MB in the beginning and 81.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,696 INFO L168 Benchmark]: Boogie Preprocessor took 34.14 ms. Allocated memory is still 125.8 MB. Free memory was 81.9 MB in the beginning and 79.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,697 INFO L168 Benchmark]: RCFGBuilder took 441.50 ms. Allocated memory is still 125.8 MB. Free memory was 79.8 MB in the beginning and 84.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,697 INFO L168 Benchmark]: TraceAbstraction took 5799.16 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 84.7 MB in the beginning and 95.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,698 INFO L168 Benchmark]: Witness Printer took 38.29 ms. Allocated memory is still 151.0 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:06,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 75.5 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 778.78 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 83.2 MB in the beginning and 85.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.29 ms. Allocated memory is still 125.8 MB. Free memory was 85.3 MB in the beginning and 81.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.14 ms. Allocated memory is still 125.8 MB. Free memory was 81.9 MB in the beginning and 79.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 441.50 ms. Allocated memory is still 125.8 MB. Free memory was 79.8 MB in the beginning and 84.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5799.16 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 84.7 MB in the beginning and 95.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 38.29 ms. Allocated memory is still 151.0 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 167 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 5 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 86 PlacesBefore, 17 PlacesAfterwards, 87 TransitionsBefore, 15 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 100 TotalNumberOfCompositions, 311 MoverChecksTotal - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={7:0}, pdev=1, t1={5:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={7:0}, pdev=4, t1={5:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...