./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/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-a4ecdab [2020-11-28 07:38:07,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:07,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:07,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:07,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:07,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:07,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:07,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:07,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:07,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:07,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:07,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:07,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:07,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:07,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:07,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:07,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:07,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:07,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:07,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:07,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:07,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:07,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:07,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:07,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:07,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:07,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:07,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:07,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:07,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:07,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:07,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:07,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:07,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:07,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:07,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:07,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:07,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:07,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:07,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:07,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:07,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:07,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:07,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:07,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:07,183 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:07,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:07,183 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:07,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:07,184 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:07,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:07,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:07,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:07,184 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:07,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:07,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:07,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:07,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:07,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:07,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:07,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:07,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:07,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:07,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:07,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:07,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:07,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:07,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:07,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:07,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:07,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:07,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:07,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:07,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:07,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:07,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:07,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:07,190 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_37692412-18ad-42f6-9875-61749b211582/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158852c017926f5105117106d37baef2e7c75d8b [2020-11-28 07:38:07,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:07,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:07,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:07,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:07,445 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:07,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-11-28 07:38:07,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/data/598564a2c/1303f6362d0342edae12cd275f8b60eb/FLAG5547e0fd5 [2020-11-28 07:38:08,106 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:08,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-11-28 07:38:08,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/data/598564a2c/1303f6362d0342edae12cd275f8b60eb/FLAG5547e0fd5 [2020-11-28 07:38:08,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/data/598564a2c/1303f6362d0342edae12cd275f8b60eb [2020-11-28 07:38:08,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:08,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:08,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:08,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:08,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:08,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a792a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:08, skipping insertion in model container [2020-11-28 07:38:08,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:08" (1/1) ... [2020-11-28 07:38:08,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:08,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:09,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:09,075 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:09,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:09,513 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:09,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09 WrapperNode [2020-11-28 07:38:09,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:09,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:09,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:09,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:09,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:09,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:09,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:09,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:09,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... [2020-11-28 07:38:09,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:09,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:09,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:09,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:09,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:38:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:38:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:38:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:38:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 07:38:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 07:38:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-28 07:38:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-28 07:38:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:38:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:09,708 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:38:10,507 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:10,507 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-28 07:38:10,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:10 BoogieIcfgContainer [2020-11-28 07:38:10,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:10,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:10,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:10,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:10,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:08" (1/3) ... [2020-11-28 07:38:10,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2637a591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:10, skipping insertion in model container [2020-11-28 07:38:10,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:09" (2/3) ... [2020-11-28 07:38:10,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2637a591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:10, skipping insertion in model container [2020-11-28 07:38:10,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:10" (3/3) ... [2020-11-28 07:38:10,523 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2020-11-28 07:38:10,535 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:38:10,535 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:10,540 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:38:10,541 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:38:10,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,571 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,571 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,579 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,580 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,580 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:38:10,587 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-28 07:38:10,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:38:10,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:10,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:10,619 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:10,619 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:10,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:10,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:10,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:10,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:10,633 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:38:10,635 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 99 transitions, 206 flow [2020-11-28 07:38:10,637 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 99 transitions, 206 flow [2020-11-28 07:38:10,639 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 99 transitions, 206 flow [2020-11-28 07:38:10,686 INFO L129 PetriNetUnfolder]: 7/113 cut-off events. [2020-11-28 07:38:10,686 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-28 07:38:10,689 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 7/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 194 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-11-28 07:38:10,691 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2020-11-28 07:38:13,298 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-11-28 07:38:13,426 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-28 07:38:13,977 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-28 07:38:14,424 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-28 07:38:14,602 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-28 07:38:14,754 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-28 07:38:14,908 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-28 07:38:14,914 INFO L131 LiptonReduction]: Checked pairs total: 302 [2020-11-28 07:38:14,915 INFO L133 LiptonReduction]: Total number of compositions: 130 [2020-11-28 07:38:14,919 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2020-11-28 07:38:14,925 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 23 states. [2020-11-28 07:38:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 07:38:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-11-28 07:38:14,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:14,931 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-11-28 07:38:14,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 435, now seen corresponding path program 1 times [2020-11-28 07:38:14,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:14,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828137062] [2020-11-28 07:38:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:15,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828137062] [2020-11-28 07:38:15,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:15,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2020-11-28 07:38:15,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748034412] [2020-11-28 07:38:15,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:38:15,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:15,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:38:15,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:38:15,315 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-28 07:38:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:15,329 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-28 07:38:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:38:15,331 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-11-28 07:38:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:15,341 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:38:15,341 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:38:15,342 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 [2020-11-28 07:38:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:38:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:38:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:38:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 07:38:15,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2020-11-28 07:38:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:15,377 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 07:38:15,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:38:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 07:38:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:38:15,379 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:15,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:38:15,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:15,384 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:15,389 INFO L82 PathProgramCache]: Analyzing trace with hash 433996, now seen corresponding path program 1 times [2020-11-28 07:38:15,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:15,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890929178] [2020-11-28 07:38:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:15,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890929178] [2020-11-28 07:38:15,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:15,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:15,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723411181] [2020-11-28 07:38:15,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:15,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:15,551 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-28 07:38:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:15,586 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-28 07:38:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:15,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-28 07:38:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:15,588 INFO L225 Difference]: With dead ends: 11 [2020-11-28 07:38:15,588 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:38:15,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:38:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:38:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:38:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-28 07:38:15,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2020-11-28 07:38:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:15,591 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 07:38:15,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 07:38:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:38:15,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:15,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:38:15,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:15,592 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash 413130641, now seen corresponding path program 1 times [2020-11-28 07:38:15,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:15,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039554650] [2020-11-28 07:38:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:15,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039554650] [2020-11-28 07:38:15,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:15,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:15,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126327546] [2020-11-28 07:38:15,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:15,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:15,695 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-11-28 07:38:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:15,723 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 07:38:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:15,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:38:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:15,724 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:38:15,724 INFO L226 Difference]: Without dead ends: 7 [2020-11-28 07:38:15,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-28 07:38:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 07:38:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 07:38:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-28 07:38:15,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2020-11-28 07:38:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:15,727 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-28 07:38:15,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-28 07:38:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:15,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:15,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:38:15,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash -77847774, now seen corresponding path program 1 times [2020-11-28 07:38:15,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:15,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452325629] [2020-11-28 07:38:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:15,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:15,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:15,881 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:38:15,882 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:15,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:38:15,882 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:38:15,887 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [398] [398] L1734-->L1711: Formula: (and (= (store |#pthreadsMutex_In213158758| |~#mutex~0.base_In213158758| (store (select |#pthreadsMutex_In213158758| |~#mutex~0.base_In213158758|) |~#mutex~0.offset_In213158758| 0)) |#pthreadsMutex_Out213158758|) (= |ULTIMATE.start_reach_error_#t~nondet32.base_Out213158758| |ULTIMATE.start_reach_error_#t~nondet32.base_In213158758|) (= |ULTIMATE.start_ldv_assert_#in~expression_Out213158758| ULTIMATE.start_ldv_assert_~expression_Out213158758) (<= |ULTIMATE.start_module_init_#t~nondet34_Out213158758| 2147483647) (= |ULTIMATE.start_reach_error_#t~nondet32.offset_In213158758| |ULTIMATE.start_reach_error_#t~nondet32.offset_Out213158758|) (= |ULTIMATE.start_ldv_assert_#in~expression_Out213158758| 1) (<= 0 (+ |ULTIMATE.start_module_init_#t~nondet34_Out213158758| 2147483648)) (= 1 ~pdev~0_Out213158758)) InVars {#pthreadsMutex=|#pthreadsMutex_In213158758|, ~#mutex~0.base=|~#mutex~0.base_In213158758|, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_In213158758|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_In213158758|, ~#mutex~0.offset=|~#mutex~0.offset_In213158758|} OutVars{ULTIMATE.start_module_init_#res=|ULTIMATE.start_module_init_#res_Out213158758|, #pthreadsMutex=|#pthreadsMutex_Out213158758|, ~#mutex~0.base=|~#mutex~0.base_In213158758|, ~pdev~0=~pdev~0_Out213158758, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_Out213158758|, ULTIMATE.start_module_init_#t~nondet35=|ULTIMATE.start_module_init_#t~nondet35_Out213158758|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_Out213158758|, ~#mutex~0.offset=|~#mutex~0.offset_In213158758|, ULTIMATE.start_module_init_#t~nondet34=|ULTIMATE.start_module_init_#t~nondet34_Out213158758|, ULTIMATE.start_ldv_assert_#in~expression=|ULTIMATE.start_ldv_assert_#in~expression_Out213158758|, ULTIMATE.start_ldv_assert_~expression=ULTIMATE.start_ldv_assert_~expression_Out213158758} AuxVars[] AssignedVars[ULTIMATE.start_module_init_#res, #pthreadsMutex, ~pdev~0, ULTIMATE.start_reach_error_#t~nondet32.offset, ULTIMATE.start_module_init_#t~nondet35, ULTIMATE.start_reach_error_#t~nondet32.base, ULTIMATE.start_module_init_#t~nondet34, ULTIMATE.start_ldv_assert_#in~expression, ULTIMATE.start_ldv_assert_~expression] because there is no mapped edge [2020-11-28 07:38:15,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:15 BasicIcfg [2020-11-28 07:38:15,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:15,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:15,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:15,915 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:15,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:10" (3/4) ... [2020-11-28 07:38:15,918 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:15,919 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [398] [398] L1734-->L1711: Formula: (and (= (store |#pthreadsMutex_In213158758| |~#mutex~0.base_In213158758| (store (select |#pthreadsMutex_In213158758| |~#mutex~0.base_In213158758|) |~#mutex~0.offset_In213158758| 0)) |#pthreadsMutex_Out213158758|) (= |ULTIMATE.start_reach_error_#t~nondet32.base_Out213158758| |ULTIMATE.start_reach_error_#t~nondet32.base_In213158758|) (= |ULTIMATE.start_ldv_assert_#in~expression_Out213158758| ULTIMATE.start_ldv_assert_~expression_Out213158758) (<= |ULTIMATE.start_module_init_#t~nondet34_Out213158758| 2147483647) (= |ULTIMATE.start_reach_error_#t~nondet32.offset_In213158758| |ULTIMATE.start_reach_error_#t~nondet32.offset_Out213158758|) (= |ULTIMATE.start_ldv_assert_#in~expression_Out213158758| 1) (<= 0 (+ |ULTIMATE.start_module_init_#t~nondet34_Out213158758| 2147483648)) (= 1 ~pdev~0_Out213158758)) InVars {#pthreadsMutex=|#pthreadsMutex_In213158758|, ~#mutex~0.base=|~#mutex~0.base_In213158758|, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_In213158758|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_In213158758|, ~#mutex~0.offset=|~#mutex~0.offset_In213158758|} OutVars{ULTIMATE.start_module_init_#res=|ULTIMATE.start_module_init_#res_Out213158758|, #pthreadsMutex=|#pthreadsMutex_Out213158758|, ~#mutex~0.base=|~#mutex~0.base_In213158758|, ~pdev~0=~pdev~0_Out213158758, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_Out213158758|, ULTIMATE.start_module_init_#t~nondet35=|ULTIMATE.start_module_init_#t~nondet35_Out213158758|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_Out213158758|, ~#mutex~0.offset=|~#mutex~0.offset_In213158758|, ULTIMATE.start_module_init_#t~nondet34=|ULTIMATE.start_module_init_#t~nondet34_Out213158758|, ULTIMATE.start_ldv_assert_#in~expression=|ULTIMATE.start_ldv_assert_#in~expression_Out213158758|, ULTIMATE.start_ldv_assert_~expression=ULTIMATE.start_ldv_assert_~expression_Out213158758} AuxVars[] AssignedVars[ULTIMATE.start_module_init_#res, #pthreadsMutex, ~pdev~0, ULTIMATE.start_reach_error_#t~nondet32.offset, ULTIMATE.start_module_init_#t~nondet35, ULTIMATE.start_reach_error_#t~nondet32.base, ULTIMATE.start_module_init_#t~nondet34, ULTIMATE.start_ldv_assert_#in~expression, ULTIMATE.start_ldv_assert_~expression] because there is no mapped edge [2020-11-28 07:38:15,998 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37692412-18ad-42f6-9875-61749b211582/bin/utaipan/witness.graphml [2020-11-28 07:38:15,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:16,000 INFO L168 Benchmark]: Toolchain (without parser) took 7673.66 ms. Allocated memory was 88.1 MB in the beginning and 184.5 MB in the end (delta: 96.5 MB). Free memory was 64.8 MB in the beginning and 86.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 75.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,001 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:16,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1187.58 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 64.6 MB in the beginning and 56.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 53.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,006 INFO L168 Benchmark]: Boogie Preprocessor took 44.91 ms. Allocated memory is still 111.1 MB. Free memory was 53.2 MB in the beginning and 50.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,007 INFO L168 Benchmark]: RCFGBuilder took 884.73 ms. Allocated memory is still 111.1 MB. Free memory was 50.8 MB in the beginning and 55.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,007 INFO L168 Benchmark]: TraceAbstraction took 5403.02 ms. Allocated memory was 111.1 MB in the beginning and 184.5 MB in the end (delta: 73.4 MB). Free memory was 54.3 MB in the beginning and 89.6 MB in the end (delta: -35.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,008 INFO L168 Benchmark]: Witness Printer took 82.92 ms. Allocated memory is still 184.5 MB. Free memory was 89.6 MB in the beginning and 86.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:16,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1187.58 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 64.6 MB in the beginning and 56.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 53.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.91 ms. Allocated memory is still 111.1 MB. Free memory was 53.2 MB in the beginning and 50.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 884.73 ms. Allocated memory is still 111.1 MB. Free memory was 50.8 MB in the beginning and 55.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5403.02 ms. Allocated memory was 111.1 MB in the beginning and 184.5 MB in the end (delta: 73.4 MB). Free memory was 54.3 MB in the beginning and 89.6 MB in the end (delta: -35.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 82.92 ms. Allocated memory is still 184.5 MB. Free memory was 89.6 MB in the beginning and 86.5 MB in the end (delta: 3.1 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 175 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 95 PlacesBefore, 17 PlacesAfterwards, 99 TransitionsBefore, 15 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 7 ConcurrentYvCompositions, 6 ChoiceCompositions, 130 TotalNumberOfCompositions, 302 MoverChecksTotal - CounterExampleResult [Line: 1693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [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={9:0}] [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={9:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_3-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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...