./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/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_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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 12:03:07,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:07,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:03:07,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:07,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:07,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:07,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:07,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:07,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:07,282 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:07,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:07,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:07,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:07,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:07,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:07,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:07,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:07,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:07,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:07,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:07,290 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:03:07,290 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:03:07,291 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:03:07,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:07,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:03:07,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:03:07,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:07,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:07,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:07,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:07,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:07,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:07,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:07,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:07,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:07,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:07,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:07,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:07,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:07,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:07,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:07,299 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_cb0a2629-2da3-4953-b141-f7a88428af15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-26 12:03:07,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:07,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:07,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:07,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:07,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:07,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-26 12:03:10,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:11,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:11,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-26 12:03:11,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/data/06ebb9e68/f3025bd7578d4095b66cd2a8ae778092/FLAGd0d9bbf50 [2023-11-26 12:03:11,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/data/06ebb9e68/f3025bd7578d4095b66cd2a8ae778092 [2023-11-26 12:03:11,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:11,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:11,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:11,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:11,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:11,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:11" (1/1) ... [2023-11-26 12:03:11,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205cda36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:11, skipping insertion in model container [2023-11-26 12:03:11,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:11" (1/1) ... [2023-11-26 12:03:11,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:12,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:12,321 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:12,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:12,664 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:03:12,664 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:03:12,673 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:12,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12 WrapperNode [2023-11-26 12:03:12,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:12,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:12,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:12,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:12,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:12,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:12,915 INFO L138 Inliner]: procedures = 397, calls = 219, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3807 [2023-11-26 12:03:12,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:12,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:12,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:12,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:12,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:12,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,328 INFO L175 MemorySlicer]: Split 693 memory accesses to 16 slices as follows [2, 1, 1, 36, 22, 28, 86, 22, 1, 25, 1, 1, 352, 113, 1, 1]. 51 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 0, 0, 4, 1, 2, 1, 2, 0, 3, 0, 0, 0, 8, 0, 0]. The 296 writes are split as follows [0, 1, 1, 25, 7, 6, 29, 3, 1, 4, 1, 1, 159, 56, 1, 1]. [2023-11-26 12:03:13,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:13,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:13,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:13,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:13,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (1/1) ... [2023-11-26 12:03:13,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:13,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:13,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0a2629-2da3-4953-b141-f7a88428af15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:03:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:03:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:03:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 12:03:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 12:03:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-26 12:03:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-26 12:03:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-26 12:03:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-26 12:03:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:03:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:03:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:03:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:03:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 12:03:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 12:03:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 12:03:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 12:03:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 12:03:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-26 12:03:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-26 12:03:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-26 12:03:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-26 12:03:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-26 12:03:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-26 12:03:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-26 12:03:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-26 12:03:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-26 12:03:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-26 12:03:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-26 12:03:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-26 12:03:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-26 12:03:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 12:03:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-26 12:03:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-26 12:03:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-26 12:03:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-26 12:03:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-26 12:03:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 12:03:13,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 12:03:13,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 12:03:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 12:03:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-26 12:03:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-26 12:03:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-26 12:03:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-26 12:03:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-26 12:03:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-26 12:03:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-26 12:03:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 12:03:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 12:03:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 12:03:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 12:03:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-26 12:03:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-26 12:03:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-26 12:03:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-26 12:03:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-26 12:03:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-26 12:03:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-26 12:03:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-26 12:03:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:03:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:03:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:03:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 12:03:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 12:03:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 12:03:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 12:03:13,647 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 12:03:14,292 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:14,295 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:20,496 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:30,855 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:30,856 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:03:30,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:30 BoogieIcfgContainer [2023-11-26 12:03:30,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:30,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:30,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:30,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:30,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:11" (1/3) ... [2023-11-26 12:03:30,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384f274b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:30, skipping insertion in model container [2023-11-26 12:03:30,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:12" (2/3) ... [2023-11-26 12:03:30,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384f274b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:30, skipping insertion in model container [2023-11-26 12:03:30,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:30" (3/3) ... [2023-11-26 12:03:30,867 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-26 12:03:30,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:30,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-26 12:03:30,889 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:03:33,337 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:03:33,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2045 places, 2135 transitions, 4298 flow [2023-11-26 12:03:38,171 INFO L124 PetriNetUnfolderBase]: 112/2128 cut-off events. [2023-11-26 12:03:38,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:38,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 2128 events. 112/2128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 20251 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 2132. Up to 5 conditions per place. [2023-11-26 12:03:38,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 2045 places, 2135 transitions, 4298 flow [2023-11-26 12:03:38,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2038 places, 2128 transitions, 4277 flow [2023-11-26 12:03:38,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:38,736 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5bc79164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:38,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2678 error locations. [2023-11-26 12:03:38,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:38,740 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-26 12:03:38,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:38,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:38,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:03:38,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [instrPop3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, instrPop3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, instrPop3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2675 more)] === [2023-11-26 12:03:38,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash 467355, now seen corresponding path program 1 times [2023-11-26 12:03:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939976464] [2023-11-26 12:03:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:39,274 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 12:03:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:39,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939976464] [2023-11-26 12:03:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939976464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:39,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145421322] [2023-11-26 12:03:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:39,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:40,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 726 out of 2135 [2023-11-26 12:03:40,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2038 places, 2128 transitions, 4277 flow. Second operand has 3 states, 3 states have (on average 726.6666666666666) internal successors, (2180), 3 states have internal predecessors, (2180), 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 12:03:40,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:40,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 726 of 2135 [2023-11-26 12:03:40,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand