./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_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 [2021-10-11 02:20:21,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:21,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:21,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:21,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:21,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:21,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:21,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:21,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:21,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:21,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:21,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:21,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:21,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:21,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:21,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:21,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:21,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:21,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:21,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:21,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:21,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:21,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:21,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:21,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:21,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:21,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:21,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:21,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:21,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:21,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:21,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:21,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:21,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:21,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:21,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:21,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:21,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:21,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:21,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:21,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:21,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:21,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:21,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:21,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:21,293 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:21,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:21,294 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:21,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:21,294 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:21,295 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:21,295 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:21,297 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:21,297 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:21,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:21,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:21,298 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:21,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:21,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:21,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:21,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:21,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:21,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:21,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:21,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:21,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:21,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:21,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:21,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:21,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:21,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:21,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:21,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:21,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:21,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:21,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:21,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:21,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:21,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:21,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:21,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:21,310 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158852c017926f5105117106d37baef2e7c75d8b [2021-10-11 02:20:21,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:21,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:21,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:21,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:21,681 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:21,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-11 02:20:21,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/data/422c7c67d/c57db7078a774b9895b4aa5c277f34f0/FLAG8f2eec5a6 [2021-10-11 02:20:22,646 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:22,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-11 02:20:22,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/data/422c7c67d/c57db7078a774b9895b4aa5c277f34f0/FLAG8f2eec5a6 [2021-10-11 02:20:22,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/data/422c7c67d/c57db7078a774b9895b4aa5c277f34f0 [2021-10-11 02:20:22,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:22,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:22,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:22,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:22,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:22,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267219a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22, skipping insertion in model container [2021-10-11 02:20:22,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:22,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:23,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-11 02:20:23,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:23,740 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:23,816 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-11 02:20:23,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:24,254 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24 WrapperNode [2021-10-11 02:20:24,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:24,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:24,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:24,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:24,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:24,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:24,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:24,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:24,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:24,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:24,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:24,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:24,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:24,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:20:24,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:24,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:20:24,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:20:24,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-11 02:20:24,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:20:24,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-11 02:20:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-11 02:20:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:20:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:24,518 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:20:25,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:25,445 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:20:25,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:25 BoogieIcfgContainer [2021-10-11 02:20:25,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:25,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:25,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:25,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:25,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:22" (1/3) ... [2021-10-11 02:20:25,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d385467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:25, skipping insertion in model container [2021-10-11 02:20:25,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (2/3) ... [2021-10-11 02:20:25,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d385467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:25, skipping insertion in model container [2021-10-11 02:20:25,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:25" (3/3) ... [2021-10-11 02:20:25,461 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-10-11 02:20:25,489 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:20:25,489 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:25,494 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:20:25,495 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:20:25,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,545 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:20:25,567 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-11 02:20:25,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:20:25,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:25,637 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:25,637 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:25,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:25,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:25,638 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:25,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:25,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:25,660 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:20:25,663 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 87 transitions, 182 flow [2021-10-11 02:20:25,667 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 87 transitions, 182 flow [2021-10-11 02:20:25,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-10-11 02:20:25,731 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-10-11 02:20:25,731 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-11 02:20:25,735 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. [2021-10-11 02:20:25,738 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2021-10-11 02:20:29,251 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-10-11 02:20:29,419 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-10-11 02:20:30,722 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-10-11 02:20:30,993 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2021-10-11 02:20:31,342 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-10-11 02:20:31,479 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-10-11 02:20:31,813 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-10-11 02:20:31,929 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-10-11 02:20:32,414 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2021-10-11 02:20:32,629 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-10-11 02:20:33,204 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2021-10-11 02:20:33,539 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-10-11 02:20:33,889 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2021-10-11 02:20:34,129 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-10-11 02:20:34,699 WARN L197 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2021-10-11 02:20:34,952 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-10-11 02:20:34,954 INFO L131 LiptonReduction]: Checked pairs total: 311 [2021-10-11 02:20:34,955 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-11 02:20:34,960 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-10-11 02:20:34,968 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 23 states. [2021-10-11 02:20:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-10-11 02:20:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-11 02:20:34,974 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:34,975 INFO L422 BasicCegarLoop]: trace histogram [1] [2021-10-11 02:20:34,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 358, now seen corresponding path program 1 times [2021-10-11 02:20:34,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:34,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883217780] [2021-10-11 02:20:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883217780] [2021-10-11 02:20:35,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-11 02:20:35,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863330772] [2021-10-11 02:20:35,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:20:35,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:20:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:35,362 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-10-11 02:20:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,378 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-10-11 02:20:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:20:35,384 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2021-10-11 02:20:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,395 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:20:35,395 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:20:35,397 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 [2021-10-11 02:20:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:20:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:20:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:20:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:20:35,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2021-10-11 02:20:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,446 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:20:35,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:20:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:20:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:20:35,447 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:20:35,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:35,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 356766, now seen corresponding path program 1 times [2021-10-11 02:20:35,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894529017] [2021-10-11 02:20:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:35,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894529017] [2021-10-11 02:20:35,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:35,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342866808] [2021-10-11 02:20:35,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:35,673 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2021-10-11 02:20:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,687 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-10-11 02:20:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:20:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,689 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:20:35,689 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:20:35,690 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 [2021-10-11 02:20:35,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:20:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:20:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:20:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:20:35,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-10-11 02:20:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,694 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:20:35,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:20:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:20:35,695 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:20:35,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:35,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 339575351, now seen corresponding path program 1 times [2021-10-11 02:20:35,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283077441] [2021-10-11 02:20:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:35,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283077441] [2021-10-11 02:20:35,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:35,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:35,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419955399] [2021-10-11 02:20:35,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:35,824 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2021-10-11 02:20:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,841 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:20:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:20:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,844 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:20:35,844 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:20:35,845 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 [2021-10-11 02:20:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:20:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:20:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:20:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-11 02:20:35,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2021-10-11 02:20:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,850 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-11 02:20:35,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-11 02:20:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:20:35,851 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:20:35,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:35,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1936904376, now seen corresponding path program 1 times [2021-10-11 02:20:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:35,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137283824] [2021-10-11 02:20:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:35,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:35,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:36,026 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:36,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:36,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:36,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:36 BasicIcfg [2021-10-11 02:20:36,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:36,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:36,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:36,056 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:36,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:25" (3/4) ... [2021-10-11 02:20:36,059 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:20:36,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86949caf-b1e0-42ea-a4d5-b4fd1f016609/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:36,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:36,115 INFO L168 Benchmark]: Toolchain (without parser) took 13365.74 ms. Allocated memory was 123.7 MB in the beginning and 262.1 MB in the end (delta: 138.4 MB). Free memory was 91.8 MB in the beginning and 218.8 MB in the end (delta: -127.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,116 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 123.7 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1502.89 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 81.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.85 ms. Allocated memory is still 148.9 MB. Free memory was 81.9 MB in the beginning and 78.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,119 INFO L168 Benchmark]: Boogie Preprocessor took 71.05 ms. Allocated memory is still 148.9 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,120 INFO L168 Benchmark]: RCFGBuilder took 1016.06 ms. Allocated memory is still 148.9 MB. Free memory was 76.7 MB in the beginning and 111.2 MB in the end (delta: -34.5 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,121 INFO L168 Benchmark]: TraceAbstraction took 10605.28 ms. Allocated memory was 148.9 MB in the beginning and 262.1 MB in the end (delta: 113.2 MB). Free memory was 110.2 MB in the beginning and 220.9 MB in the end (delta: -110.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,122 INFO L168 Benchmark]: Witness Printer took 58.03 ms. Allocated memory is still 262.1 MB. Free memory was 220.9 MB in the beginning and 218.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 123.7 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1502.89 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 81.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.85 ms. Allocated memory is still 148.9 MB. Free memory was 81.9 MB in the beginning and 78.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.05 ms. Allocated memory is still 148.9 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1016.06 ms. Allocated memory is still 148.9 MB. Free memory was 76.7 MB in the beginning and 111.2 MB in the end (delta: -34.5 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10605.28 ms. Allocated memory was 148.9 MB in the beginning and 262.1 MB in the end (delta: 113.2 MB). Free memory was 110.2 MB in the beginning and 220.9 MB in the end (delta: -110.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 58.03 ms. Allocated memory is still 262.1 MB. Free memory was 220.9 MB in the beginning and 218.8 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: 0.3s, 5 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 9.2s, 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: 10.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, 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, 0.2s 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...