./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:46,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:46,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:07:46,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:46,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:46,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:46,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:46,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:46,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:07:46,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:07:46,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:46,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:46,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:46,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:46,837 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:46,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:46,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:07:46,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:07:46,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:46,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:07:46,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:46,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:07:46,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:46,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:07:46,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:46,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:07:46,843 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:07:46,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:07:46,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:07:46,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:46,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:46,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:46,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:07:46,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:46,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:46,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:46,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:46,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:07:46,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:46,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:46,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:46,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:46,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:46,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:46,850 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_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2024-10-31 22:07:47,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:47,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:47,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:47,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:47,179 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:47,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i Unable to find full path for "g++" [2024-10-31 22:07:49,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:49,670 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:49,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2024-10-31 22:07:49,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/data/c90f53e07/18d420b19a24491dacce617b5ac80f1c/FLAG5a203ef43 [2024-10-31 22:07:49,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/data/c90f53e07/18d420b19a24491dacce617b5ac80f1c [2024-10-31 22:07:49,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:49,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:49,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:49,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:49,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:49,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:49" (1/1) ... [2024-10-31 22:07:49,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e94049d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:49, skipping insertion in model container [2024-10-31 22:07:49,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:49" (1/1) ... [2024-10-31 22:07:49,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:50,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:50,842 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:50,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:51,113 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:51,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51 WrapperNode [2024-10-31 22:07:51,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:51,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:51,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:51,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:51,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,327 INFO L138 Inliner]: procedures = 396, calls = 207, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3870 [2024-10-31 22:07:51,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:51,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:51,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:51,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:51,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,817 INFO L175 MemorySlicer]: Split 700 memory accesses to 9 slices as follows [2, 86, 36, 28, 22, 25, 366, 22, 113]. 52 percent of accesses are in the largest equivalence class. The 39 initializations are split as follows [2, 1, 4, 2, 2, 3, 16, 1, 8]. The 287 writes are split as follows [0, 29, 25, 6, 3, 4, 157, 7, 56]. [2024-10-31 22:07:51,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:51,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:52,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:52,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:52,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:52,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:52,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (1/1) ... [2024-10-31 22:07:52,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:52,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:52,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a74bae-672f-48dc-8fb3-d50edbebe67f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:07:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:07:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:07:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:07:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:07:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:07:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 22:07:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-31 22:07:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-31 22:07:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-31 22:07:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-31 22:07:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-31 22:07:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-31 22:07:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-31 22:07:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-31 22:07:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-10-31 22:07:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-10-31 22:07:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-10-31 22:07:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-10-31 22:07:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-10-31 22:07:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-10-31 22:07:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-10-31 22:07:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:07:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:07:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:07:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-31 22:07:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-31 22:07:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-31 22:07:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:07:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-31 22:07:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-31 22:07:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-31 22:07:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-31 22:07:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-10-31 22:07:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 22:07:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-31 22:07:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-31 22:07:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-31 22:07:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-31 22:07:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-10-31 22:07:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-10-31 22:07:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-10-31 22:07:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-10-31 22:07:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-10-31 22:07:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-10-31 22:07:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-10-31 22:07:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-10-31 22:07:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:07:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:07:52,126 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:07:52,573 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:52,575 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:07:57,126 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:07:57,126 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:01,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:01,437 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:08:01,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:01 BoogieIcfgContainer [2024-10-31 22:08:01,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:01,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:01,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:01,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:01,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:49" (1/3) ... [2024-10-31 22:08:01,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2316947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:01, skipping insertion in model container [2024-10-31 22:08:01,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:51" (2/3) ... [2024-10-31 22:08:01,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2316947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:01, skipping insertion in model container [2024-10-31 22:08:01,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:01" (3/3) ... [2024-10-31 22:08:01,447 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-10-31 22:08:01,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:01,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-10-31 22:08:01,468 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:08:02,363 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:08:02,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 583 transitions, 1194 flow [2024-10-31 22:08:03,066 INFO L124 PetriNetUnfolderBase]: 98/576 cut-off events. [2024-10-31 22:08:03,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 576 events. 98/576 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3444 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 586. Up to 5 conditions per place. [2024-10-31 22:08:03,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 583 transitions, 1194 flow [2024-10-31 22:08:03,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 576 transitions, 1173 flow [2024-10-31 22:08:03,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:03,159 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33ecb02a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:03,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 175 error locations. [2024-10-31 22:08:03,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:08:03,167 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:08:03,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:08:03,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:03,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:08:03,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [instrPop3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 172 more)] === [2024-10-31 22:08:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash 331749281, now seen corresponding path program 1 times [2024-10-31 22:08:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209243274] [2024-10-31 22:08:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209243274] [2024-10-31 22:08:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209243274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:04,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:08:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771722771] [2024-10-31 22:08:04,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:04,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:04,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 583 [2024-10-31 22:08:04,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 576 transitions, 1173 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:04,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:04,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 583 [2024-10-31 22:08:04,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand