./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.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_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/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_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/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_71f50908-80b3-4527-8e26-8b401858f81c/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 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:01,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:01,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:01,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:01,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:01,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:01,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:01,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:01,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:01,620 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:01,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:01,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:01,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:01,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:01,624 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:01,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:01,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:01,625 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:01,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:01,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:01,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:01,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:01,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:01,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:01,629 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:01,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:01,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:01,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:01,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:01,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:01,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:01,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:01,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:01,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:01,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:01,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:01,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:01,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:01,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:01,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:01,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:01,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:01,636 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_71f50908-80b3-4527-8e26-8b401858f81c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-26 11:45:02,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:02,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:02,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:02,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:02,053 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:02,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-26 11:45:05,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:05,721 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:05,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-26 11:45:05,759 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/data/6f04f2cf6/ec30ccb8d1314f4d82df1a96774fb574/FLAG3d64e2e86 [2023-11-26 11:45:05,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/data/6f04f2cf6/ec30ccb8d1314f4d82df1a96774fb574 [2023-11-26 11:45:05,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:05,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:05,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:05,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:05,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:05,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:05,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eb0d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:05, skipping insertion in model container [2023-11-26 11:45:05,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:05" (1/1) ... [2023-11-26 11:45:05,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:06,786 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_71f50908-80b3-4527-8e26-8b401858f81c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-26 11:45:06,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:06,923 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:06,997 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_71f50908-80b3-4527-8e26-8b401858f81c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-26 11:45:07,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:07,115 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:07,115 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:07,124 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:07,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07 WrapperNode [2023-11-26 11:45:07,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:07,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:07,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:07,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:07,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,306 INFO L138 Inliner]: procedures = 397, calls = 218, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3786 [2023-11-26 11:45:07,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:07,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:07,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:07,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:07,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,714 INFO L175 MemorySlicer]: Split 693 memory accesses to 16 slices as follows [2, 1, 36, 28, 1, 22, 25, 113, 1, 86, 1, 22, 1, 1, 352, 1]. 51 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 0, 4, 2, 0, 2, 3, 8, 0, 1, 0, 1, 0, 0, 0, 0]. The 296 writes are split as follows [0, 1, 25, 6, 1, 3, 4, 56, 1, 29, 1, 7, 1, 1, 159, 1]. [2023-11-26 11:45:07,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:07,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:07,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:07,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:07,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:07,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:08,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f50908-80b3-4527-8e26-8b401858f81c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:45:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:45:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:45:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:45:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:45:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:45:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:45:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:45:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:45:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:45:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:45:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 11:45:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-26 11:45:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-26 11:45:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-26 11:45:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-26 11:45:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-26 11:45:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-26 11:45:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:45:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:45:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:45:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:45:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:45:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:45:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:45:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:45:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 11:45:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-26 11:45:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-26 11:45:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-26 11:45:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-26 11:45:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-26 11:45:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-26 11:45:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-26 11:45:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-26 11:45:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-26 11:45:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-26 11:45:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-26 11:45:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-26 11:45:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-26 11:45:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:45:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:45:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:45:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 11:45:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-26 11:45:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-26 11:45:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-26 11:45:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-26 11:45:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-26 11:45:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-26 11:45:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-26 11:45:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:45:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:45:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:45:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 11:45:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-26 11:45:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-26 11:45:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-26 11:45:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-26 11:45:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:45:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:45:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:45:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:45:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:45:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:45:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:45:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 11:45:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-26 11:45:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-26 11:45:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-26 11:45:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-26 11:45:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-26 11:45:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-26 11:45:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-26 11:45:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-26 11:45:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-26 11:45:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-26 11:45:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-26 11:45:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-26 11:45:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-26 11:45:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-26 11:45:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:45:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:45:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:45:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:45:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:45:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:45:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:45:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:45:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:45:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:45:08,071 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 11:45:08,632 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:08,639 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:12,694 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:17,165 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:17,166 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:45:17,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:17 BoogieIcfgContainer [2023-11-26 11:45:17,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:17,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:17,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:17,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:17,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:05" (1/3) ... [2023-11-26 11:45:17,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52347ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:17, skipping insertion in model container [2023-11-26 11:45:17,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (2/3) ... [2023-11-26 11:45:17,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52347ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:17, skipping insertion in model container [2023-11-26 11:45:17,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:17" (3/3) ... [2023-11-26 11:45:17,183 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-26 11:45:17,194 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:45:17,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:17,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-26 11:45:17,207 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:45:18,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:45:18,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 506 transitions, 1040 flow [2023-11-26 11:45:18,845 INFO L124 PetriNetUnfolderBase]: 98/499 cut-off events. [2023-11-26 11:45:18,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:45:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 499 events. 98/499 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2703 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 509. Up to 5 conditions per place. [2023-11-26 11:45:18,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 506 transitions, 1040 flow [2023-11-26 11:45:18,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 499 transitions, 1019 flow [2023-11-26 11:45:18,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:18,934 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;@68a8bc9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:18,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 11:45:18,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:45:18,962 INFO L124 PetriNetUnfolderBase]: 5/76 cut-off events. [2023-11-26 11:45:18,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:45:18,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:18,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:18,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONERROR_FUNCTION === [instrPop3Err0ASSERT_VIOLATIONERROR_FUNCTION, instrPop4Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-11-26 11:45:18,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1056887020, now seen corresponding path program 1 times [2023-11-26 11:45:18,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:18,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413600992] [2023-11-26 11:45:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,577 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 11:45:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413600992] [2023-11-26 11:45:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413600992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643048077] [2023-11-26 11:45:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:19,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 506 [2023-11-26 11:45:19,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 499 transitions, 1019 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 11:45:19,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:19,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 506 [2023-11-26 11:45:19,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand