./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:50:17,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:50:17,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:50:17,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:50:17,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:50:17,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:50:17,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:50:17,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:50:17,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:50:17,175 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:50:17,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:50:17,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:50:17,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:50:17,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:50:17,178 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:50:17,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:50:17,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:50:17,180 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:50:17,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:50:17,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:50:17,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:50:17,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:50:17,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:50:17,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:50:17,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:50:17,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:50:17,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:50:17,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:50:17,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:50:17,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:50:17,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:50:17,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:17,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:50:17,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:50:17,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:50:17,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:50:17,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:50:17,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:50:17,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:50:17,193 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:50:17,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:50:17,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:50:17,194 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_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-26 10:50:17,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:50:17,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:50:17,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:50:17,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:50:17,540 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:50:17,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-26 10:50:20,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:50:21,258 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:50:21,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-26 10:50:21,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/data/d944e340e/f1722d9c831b49b78b913008bf5fb479/FLAGfd9316b9b [2023-11-26 10:50:21,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/data/d944e340e/f1722d9c831b49b78b913008bf5fb479 [2023-11-26 10:50:21,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:50:21,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:50:21,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:21,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:50:21,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:50:21,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:21" (1/1) ... [2023-11-26 10:50:21,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b07858c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:21, skipping insertion in model container [2023-11-26 10:50:21,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:21" (1/1) ... [2023-11-26 10:50:21,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:50:22,106 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_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-26 10:50:22,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:22,185 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:50:22,266 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_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-26 10:50:22,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:22,411 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:50:22,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22 WrapperNode [2023-11-26 10:50:22,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:22,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:22,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:50:22,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:50:22,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,509 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 224 [2023-11-26 10:50:22,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:22,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:50:22,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:50:22,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:50:22,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,616 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 5, 5, 2, 14]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 10 writes are split as follows [0, 1, 0, 0, 1, 8]. [2023-11-26 10:50:22,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:50:22,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:50:22,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:50:22,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:50:22,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (1/1) ... [2023-11-26 10:50:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:22,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:50:22,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64c69a5-a54c-43a1-91d1-ac6cfad4c702/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:50:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:50:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:50:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:50:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:50:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:50:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 10:50:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 10:50:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 10:50:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 10:50:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:50:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:50:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:50:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:50:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:50:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:50:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:50:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:50:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 10:50:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 10:50:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:50:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:50:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:50:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:50:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:50:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:50:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:50:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:50:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:50:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:50:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:50:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:50:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:50:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:50:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:50:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:50:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:50:22,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:50:22,831 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:50:23,139 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:50:23,142 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:50:23,737 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:50:24,081 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:50:24,082 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-26 10:50:24,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:24 BoogieIcfgContainer [2023-11-26 10:50:24,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:50:24,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:50:24,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:50:24,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:50:24,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:50:21" (1/3) ... [2023-11-26 10:50:24,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744cd286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:24, skipping insertion in model container [2023-11-26 10:50:24,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:22" (2/3) ... [2023-11-26 10:50:24,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744cd286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:24, skipping insertion in model container [2023-11-26 10:50:24,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:24" (3/3) ... [2023-11-26 10:50:24,095 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-26 10:50:24,107 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:50:24,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:50:24,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:50:24,123 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:50:24,251 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 10:50:24,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 72 transitions, 164 flow [2023-11-26 10:50:24,396 INFO L124 PetriNetUnfolderBase]: 36/149 cut-off events. [2023-11-26 10:50:24,396 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 10:50:24,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 149 events. 36/149 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 603 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2023-11-26 10:50:24,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 72 transitions, 164 flow [2023-11-26 10:50:24,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 70 transitions, 154 flow [2023-11-26 10:50:24,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:24,432 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;@45e8b4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:24,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 10:50:24,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:24,446 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 10:50:24,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:50:24,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:24,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:50:24,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 10:50:24,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash -185988621, now seen corresponding path program 1 times [2023-11-26 10:50:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:24,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606825190] [2023-11-26 10:50:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:24,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:50:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:24,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:50:24,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:50:24,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-26 10:50:24,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-26 10:50:24,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 10:50:24,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-26 10:50:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:50:24,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:50:24,879 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:50:24,880 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:50:24,997 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 10:50:25,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 129 transitions, 302 flow [2023-11-26 10:50:25,193 INFO L124 PetriNetUnfolderBase]: 141/489 cut-off events. [2023-11-26 10:50:25,193 INFO L125 PetriNetUnfolderBase]: For 72/85 co-relation queries the response was YES. [2023-11-26 10:50:25,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 489 events. 141/489 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2822 event pairs, 2 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 326. Up to 32 conditions per place. [2023-11-26 10:50:25,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 129 transitions, 302 flow [2023-11-26 10:50:25,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 129 transitions, 302 flow [2023-11-26 10:50:25,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:25,227 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;@45e8b4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:25,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 10:50:25,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:25,243 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-26 10:50:25,243 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-26 10:50:25,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:25,244 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-26 10:50:25,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 10:50:25,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1372962045, now seen corresponding path program 1 times [2023-11-26 10:50:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:25,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137078621] [2023-11-26 10:50:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:25,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:50:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:25,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:50:25,366 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:50:25,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-26 10:50:25,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-26 10:50:25,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-26 10:50:25,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-26 10:50:25,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-26 10:50:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:50:25,369 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:50:25,370 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:50:25,370 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 10:50:25,470 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-26 10:50:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 186 transitions, 444 flow [2023-11-26 10:50:25,860 INFO L124 PetriNetUnfolderBase]: 504/1409 cut-off events. [2023-11-26 10:50:25,860 INFO L125 PetriNetUnfolderBase]: For 419/470 co-relation queries the response was YES. [2023-11-26 10:50:25,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 1409 events. 504/1409 cut-off events. For 419/470 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9463 event pairs, 64 based on Foata normal form. 0/1065 useless extension candidates. Maximal degree in co-relation 1025. Up to 192 conditions per place. [2023-11-26 10:50:25,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 186 transitions, 444 flow [2023-11-26 10:50:25,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 186 transitions, 444 flow [2023-11-26 10:50:25,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:25,934 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;@45e8b4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:25,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 10:50:25,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:25,955 INFO L124 PetriNetUnfolderBase]: 6/104 cut-off events. [2023-11-26 10:50:25,956 INFO L125 PetriNetUnfolderBase]: For 20/23 co-relation queries the response was YES. [2023-11-26 10:50:25,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:25,959 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-26 10:50:25,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 10:50:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1568906414, now seen corresponding path program 1 times [2023-11-26 10:50:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460723747] [2023-11-26 10:50:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:26,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:50:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:26,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:50:26,053 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:50:26,053 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-26 10:50:26,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-26 10:50:26,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-26 10:50:26,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-26 10:50:26,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-26 10:50:26,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-26 10:50:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:50:26,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:50:26,056 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:50:26,056 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 10:50:26,209 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-11-26 10:50:26,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 243 transitions, 590 flow [2023-11-26 10:50:27,948 INFO L124 PetriNetUnfolderBase]: 2097/4637 cut-off events. [2023-11-26 10:50:27,948 INFO L125 PetriNetUnfolderBase]: For 2144/2247 co-relation queries the response was YES. [2023-11-26 10:50:28,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6778 conditions, 4637 events. 2097/4637 cut-off events. For 2144/2247 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 33489 event pairs, 626 based on Foata normal form. 0/3765 useless extension candidates. Maximal degree in co-relation 3469. Up to 1024 conditions per place. [2023-11-26 10:50:28,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 243 transitions, 590 flow [2023-11-26 10:50:28,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 243 transitions, 590 flow [2023-11-26 10:50:28,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:28,226 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;@45e8b4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:28,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:50:28,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:28,264 INFO L124 PetriNetUnfolderBase]: 19/192 cut-off events. [2023-11-26 10:50:28,264 INFO L125 PetriNetUnfolderBase]: For 57/68 co-relation queries the response was YES. [2023-11-26 10:50:28,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:28,265 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:28,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:28,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1550032561, now seen corresponding path program 1 times [2023-11-26 10:50:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:28,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604718235] [2023-11-26 10:50:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:28,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:50:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:28,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:50:28,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:50:28,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-26 10:50:28,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-26 10:50:28,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-26 10:50:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-26 10:50:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-26 10:50:28,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-26 10:50:28,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-26 10:50:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:50:28,374 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:50:28,375 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:50:28,375 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-26 10:50:28,558 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-11-26 10:50:28,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 300 transitions, 740 flow [2023-11-26 10:50:35,228 INFO L124 PetriNetUnfolderBase]: 9672/17949 cut-off events. [2023-11-26 10:50:35,228 INFO L125 PetriNetUnfolderBase]: For 10450/10622 co-relation queries the response was YES. [2023-11-26 10:50:35,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28340 conditions, 17949 events. 9672/17949 cut-off events. For 10450/10622 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 138676 event pairs, 2148 based on Foata normal form. 0/15361 useless extension candidates. Maximal degree in co-relation 13709. Up to 5120 conditions per place. [2023-11-26 10:50:35,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 300 transitions, 740 flow [2023-11-26 10:50:36,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 300 transitions, 740 flow [2023-11-26 10:50:36,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:36,489 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;@45e8b4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:36,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 10:50:36,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:36,553 INFO L124 PetriNetUnfolderBase]: 34/273 cut-off events. [2023-11-26 10:50:36,553 INFO L125 PetriNetUnfolderBase]: For 101/131 co-relation queries the response was YES. [2023-11-26 10:50:36,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:36,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:36,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-26 10:50:36,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash -392236530, now seen corresponding path program 1 times [2023-11-26 10:50:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088390799] [2023-11-26 10:50:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088390799] [2023-11-26 10:50:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088390799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:36,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:50:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702167104] [2023-11-26 10:50:36,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:36,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:36,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 300 [2023-11-26 10:50:36,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 300 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2023-11-26 10:50:36,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:36,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 300 [2023-11-26 10:50:36,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand