./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:12,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:12,502 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:12,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:12,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:12,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:12,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:12,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:12,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:12,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:12,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:12,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:12,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:12,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:12,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:12,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:12,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:12,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:12,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:12,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:12,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:12,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:12,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:12,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:12,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:12,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:12,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:12,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:12,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:12,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:12,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:12,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:12,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:12,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:12,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:12,548 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:12,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:12,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:12,549 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:12,550 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-11-19 08:02:12,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:12,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:12,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:12,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:12,917 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:12,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-19 08:02:16,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:16,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:16,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-19 08:02:16,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/data/e065b4728/66e9e43847424e4b9597a07bdaf5c617/FLAG4b63335f5 [2023-11-19 08:02:16,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/data/e065b4728/66e9e43847424e4b9597a07bdaf5c617 [2023-11-19 08:02:16,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:16,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:16,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:16,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:16,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:16,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:16" (1/1) ... [2023-11-19 08:02:16,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672e7a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:16, skipping insertion in model container [2023-11-19 08:02:16,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:16" (1/1) ... [2023-11-19 08:02:16,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:17,012 WARN L240 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_8f09cc3b-069e-4ab4-b00b-00548261e54d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-19 08:02:17,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:17,034 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:17,099 WARN L240 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_8f09cc3b-069e-4ab4-b00b-00548261e54d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-11-19 08:02:17,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:17,152 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:17,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17 WrapperNode [2023-11-19 08:02:17,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:17,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:17,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:17,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:17,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,203 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-19 08:02:17,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:17,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:17,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:17,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:17,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:17,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:17,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:17,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:17,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (1/1) ... [2023-11-19 08:02:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:17,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:02:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:02:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:02:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:02:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:02:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:17,364 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:02:17,497 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:17,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:17,766 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:17,775 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:17,776 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:02:17,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:17 BoogieIcfgContainer [2023-11-19 08:02:17,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:17,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:17,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:17,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:16" (1/3) ... [2023-11-19 08:02:17,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2e38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:17, skipping insertion in model container [2023-11-19 08:02:17,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:17" (2/3) ... [2023-11-19 08:02:17,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2e38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:17, skipping insertion in model container [2023-11-19 08:02:17,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:17" (3/3) ... [2023-11-19 08:02:17,796 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-11-19 08:02:17,806 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:02:17,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:17,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:17,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:02:18,013 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:02:18,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,127 INFO L124 PetriNetUnfolderBase]: 10/78 cut-off events. [2023-11-19 08:02:18,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:18,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 10/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-11-19 08:02:18,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,151 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:18,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 67 transitions, 138 flow [2023-11-19 08:02:18,221 INFO L124 PetriNetUnfolderBase]: 10/78 cut-off events. [2023-11-19 08:02:18,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:18,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 10/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-11-19 08:02:18,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-11-19 08:02:20,116 INFO L134 LiptonReduction]: Checked pairs total: 964 [2023-11-19 08:02:20,116 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-19 08:02:20,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:20,148 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1daee49d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:20,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 08:02:20,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:20,153 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-19 08:02:20,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:20,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:20,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:02:20,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:20,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 457210593, now seen corresponding path program 1 times [2023-11-19 08:02:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225265836] [2023-11-19 08:02:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:20,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:02:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:20,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:02:20,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:02:20,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-19 08:02:20,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-19 08:02:20,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-19 08:02:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:20,336 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:02:20,339 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:02:20,340 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:02:20,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:02:20,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,412 INFO L124 PetriNetUnfolderBase]: 19/135 cut-off events. [2023-11-19 08:02:20,413 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:02:20,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 135 events. 19/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 283 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-11-19 08:02:20,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,418 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:20,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 111 transitions, 232 flow [2023-11-19 08:02:20,448 INFO L124 PetriNetUnfolderBase]: 19/135 cut-off events. [2023-11-19 08:02:20,449 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:02:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 135 events. 19/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 283 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2023-11-19 08:02:20,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 6192 [2023-11-19 08:02:23,085 INFO L134 LiptonReduction]: Checked pairs total: 4589 [2023-11-19 08:02:23,085 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-11-19 08:02:23,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:23,089 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1daee49d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:23,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 08:02:23,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:23,094 INFO L124 PetriNetUnfolderBase]: 5/18 cut-off events. [2023-11-19 08:02:23,094 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:02:23,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:23,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:02:23,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 08:02:23,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash -798946052, now seen corresponding path program 1 times [2023-11-19 08:02:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712856756] [2023-11-19 08:02:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:23,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:02:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:23,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:02:23,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:02:23,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 08:02:23,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 08:02:23,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 08:02:23,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 08:02:23,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:23,205 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:02:23,210 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-19 08:02:23,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:02:23,229 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-19 08:02:23,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:02:23 BasicIcfg [2023-11-19 08:02:23,238 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:02:23,238 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:02:23,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:02:23,238 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:02:23,239 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:17" (3/4) ... [2023-11-19 08:02:23,240 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 08:02:23,246 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-19 08:02:23,280 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09cc3b-069e-4ab4-b00b-00548261e54d/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:02:23,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:02:23,282 INFO L158 Benchmark]: Toolchain (without parser) took 6837.94ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 114.4MB in the beginning and 69.9MB in the end (delta: 44.5MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,282 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:02:23,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 708.13ms. Allocated memory is still 159.4MB. Free memory was 113.9MB in the beginning and 94.3MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.03ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 92.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:02:23,284 INFO L158 Benchmark]: Boogie Preprocessor took 55.96ms. Allocated memory is still 159.4MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,284 INFO L158 Benchmark]: RCFGBuilder took 518.58ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 78.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,285 INFO L158 Benchmark]: TraceAbstraction took 5449.74ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 78.0MB in the beginning and 72.0MB in the end (delta: 6.0MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,286 INFO L158 Benchmark]: Witness Printer took 42.50ms. Allocated memory is still 201.3MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:23,288 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 708.13ms. Allocated memory is still 159.4MB. Free memory was 113.9MB in the beginning and 94.3MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.03ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 92.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.96ms. Allocated memory is still 159.4MB. Free memory was 92.7MB in the beginning and 91.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.58ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 78.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5449.74ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 78.0MB in the beginning and 72.0MB in the end (delta: 6.0MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Witness Printer took 42.50ms. Allocated memory is still 201.3MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 61 PlacesBefore, 15 PlacesAfterwards, 67 TransitionsBefore, 17 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 5 FixpointIterations, 8 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 57 TotalNumberOfCompositions, 964 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 964, independent: 964, independent conditional: 0, independent unconditional: 964, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 594, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 964, independent: 370, independent conditional: 0, independent unconditional: 370, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 594, unknown conditional: 0, unknown unconditional: 594] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 99 PlacesBefore, 25 PlacesAfterwards, 111 TransitionsBefore, 30 TransitionsAfterwards, 6192 CoEnabledTransitionPairs, 5 FixpointIterations, 8 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 7 ChoiceCompositions, 94 TotalNumberOfCompositions, 4589 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4589, independent: 4589, independent conditional: 0, independent unconditional: 4589, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2991, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4589, independent: 1598, independent conditional: 0, independent unconditional: 1598, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2991, unknown conditional: 0, unknown unconditional: 2991] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i