./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:27,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:27,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:07:27,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:27,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:27,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:27,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:27,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:27,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:07:27,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:07:27,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:27,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:27,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:27,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:27,919 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:27,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:27,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:07:27,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:07:27,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:27,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:07:27,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:27,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:07:27,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:27,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:07:27,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:27,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:07:27,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:07:27,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:27,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:27,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:27,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:07:27,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:27,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:27,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:27,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:27,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:07:27,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:27,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:27,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:27,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:27,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:27,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:27,937 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_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-10-31 22:07:28,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:28,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:28,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:28,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:28,288 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:28,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i Unable to find full path for "g++" [2024-10-31 22:07:30,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:30,763 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:30,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-10-31 22:07:30,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/data/10d1b90c4/49d0b301736f4f5e9c9eb2c61d7ed4b9/FLAG7a0238c7e [2024-10-31 22:07:31,028 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/data/10d1b90c4/49d0b301736f4f5e9c9eb2c61d7ed4b9 [2024-10-31 22:07:31,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:31,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:31,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:31,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:31,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:31,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:31" (1/1) ... [2024-10-31 22:07:31,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2639527e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:31, skipping insertion in model container [2024-10-31 22:07:31,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:31" (1/1) ... [2024-10-31 22:07:31,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:31,756 WARN L251 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_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2024-10-31 22:07:31,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:31,832 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:31,895 WARN L251 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_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2024-10-31 22:07:31,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:32,027 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:32,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32 WrapperNode [2024-10-31 22:07:32,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:32,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:32,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:32,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:32,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,122 INFO L138 Inliner]: procedures = 271, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 142 [2024-10-31 22:07:32,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:32,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:32,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:32,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:32,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,181 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 2, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-10-31 22:07:32,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:32,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:32,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:32,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:32,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (1/1) ... [2024-10-31 22:07:32,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:32,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:32,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:32,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e74f7aa5-d0d2-4ace-945d-c3a81d34cc7d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:07:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:07:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:07:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:07:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:07:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:07:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:07:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:07:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:07:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:07:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:07:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:07:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:07:32,350 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:07:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:07:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:07:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:07:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:07:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:32,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:32,353 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:07:32,539 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:32,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:07:32,978 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:07:32,978 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:07:33,433 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:07:33,436 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-31 22:07:33,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:33 BoogieIcfgContainer [2024-10-31 22:07:33,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:07:33,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:07:33,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:07:33,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:07:33,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:31" (1/3) ... [2024-10-31 22:07:33,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63072310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:33, skipping insertion in model container [2024-10-31 22:07:33,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:32" (2/3) ... [2024-10-31 22:07:33,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63072310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:33, skipping insertion in model container [2024-10-31 22:07:33,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:33" (3/3) ... [2024-10-31 22:07:33,455 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-10-31 22:07:33,482 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:07:33,482 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:07:33,483 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:07:33,538 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:07:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 56 transitions, 119 flow [2024-10-31 22:07:33,661 INFO L124 PetriNetUnfolderBase]: 19/83 cut-off events. [2024-10-31 22:07:33,663 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:07:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 19/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2024-10-31 22:07:33,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 56 transitions, 119 flow [2024-10-31 22:07:33,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 54 transitions, 112 flow [2024-10-31 22:07:33,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:33,705 INFO L333 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, 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;@2a87c595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:33,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:07:33,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:33,725 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-31 22:07:33,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:07:33,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:33,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:07:33,727 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:33,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1351144767, now seen corresponding path program 1 times [2024-10-31 22:07:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:33,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062583161] [2024-10-31 22:07:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:34,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:07:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:34,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:07:34,258 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:07:34,259 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-31 22:07:34,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-31 22:07:34,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:07:34,263 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 22:07:34,271 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:07:34,271 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:07:34,313 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:07:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 81 transitions, 178 flow [2024-10-31 22:07:34,370 INFO L124 PetriNetUnfolderBase]: 33/142 cut-off events. [2024-10-31 22:07:34,370 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:07:34,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 33/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 566 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 87. Up to 9 conditions per place. [2024-10-31 22:07:34,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 81 transitions, 178 flow [2024-10-31 22:07:34,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 81 transitions, 178 flow [2024-10-31 22:07:34,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:34,381 INFO L333 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, 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;@2a87c595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:34,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:07:34,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:34,403 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-10-31 22:07:34,403 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:07:34,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:34,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:07:34,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:34,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1212397345, now seen corresponding path program 1 times [2024-10-31 22:07:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457600291] [2024-10-31 22:07:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:34,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:07:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:34,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:07:34,593 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:07:34,593 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-31 22:07:34,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-31 22:07:34,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:07:34,594 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 22:07:34,595 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:07:34,595 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:07:34,628 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:07:34,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 106 transitions, 239 flow [2024-10-31 22:07:34,672 INFO L124 PetriNetUnfolderBase]: 50/212 cut-off events. [2024-10-31 22:07:34,672 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 22:07:34,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 212 events. 50/212 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 906 event pairs, 1 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2024-10-31 22:07:34,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 106 transitions, 239 flow [2024-10-31 22:07:34,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 106 transitions, 239 flow [2024-10-31 22:07:34,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:34,680 INFO L333 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, 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;@2a87c595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:34,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:07:34,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:34,698 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-10-31 22:07:34,698 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:07:34,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:34,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:34,699 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:34,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 64227632, now seen corresponding path program 1 times [2024-10-31 22:07:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192520903] [2024-10-31 22:07:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:34,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:34,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192520903] [2024-10-31 22:07:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192520903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085049830] [2024-10-31 22:07:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:34,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:34,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 106 [2024-10-31 22:07:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:34,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 106 [2024-10-31 22:07:34,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:44,388 INFO L124 PetriNetUnfolderBase]: 44900/72634 cut-off events. [2024-10-31 22:07:44,388 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-10-31 22:07:44,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134540 conditions, 72634 events. 44900/72634 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 637248 event pairs, 26352 based on Foata normal form. 20384/87864 useless extension candidates. Maximal degree in co-relation 10325. Up to 61095 conditions per place. [2024-10-31 22:07:44,783 INFO L140 encePairwiseOnDemand]: 82/106 looper letters, 49 selfloop transitions, 2 changer transitions 11/96 dead transitions. [2024-10-31 22:07:44,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 337 flow [2024-10-31 22:07:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-10-31 22:07:44,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-10-31 22:07:44,803 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 239 flow. Second operand 3 states and 198 transitions. [2024-10-31 22:07:44,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 337 flow [2024-10-31 22:07:44,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:07:44,820 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 178 flow [2024-10-31 22:07:44,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-10-31 22:07:44,826 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-10-31 22:07:44,826 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 178 flow [2024-10-31 22:07:44,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:44,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:44,827 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-31 22:07:44,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:07:44,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:44,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 968495454, now seen corresponding path program 1 times [2024-10-31 22:07:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022895338] [2024-10-31 22:07:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:44,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:44,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:07:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:44,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:07:44,939 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:07:44,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-31 22:07:44,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-31 22:07:44,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:07:44,941 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:07:44,942 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:07:44,942 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 22:07:44,989 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:07:44,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 131 transitions, 302 flow [2024-10-31 22:07:45,046 INFO L124 PetriNetUnfolderBase]: 75/306 cut-off events. [2024-10-31 22:07:45,046 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-31 22:07:45,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 306 events. 75/306 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1368 event pairs, 6 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 236. Up to 32 conditions per place. [2024-10-31 22:07:45,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 131 transitions, 302 flow [2024-10-31 22:07:45,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 131 transitions, 302 flow [2024-10-31 22:07:45,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:45,055 INFO L333 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, 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;@2a87c595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:45,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:07:45,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:45,064 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-10-31 22:07:45,064 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:07:45,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:45,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:45,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:45,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 65112115, now seen corresponding path program 1 times [2024-10-31 22:07:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812723565] [2024-10-31 22:07:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812723565] [2024-10-31 22:07:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812723565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:45,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:45,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095274461] [2024-10-31 22:07:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:45,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:45,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 131 [2024-10-31 22:07:45,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:45,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:45,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 131 [2024-10-31 22:07:45,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand