/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:11:30,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:11:30,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 00:11:30,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:11:30,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:11:30,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:11:30,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:11:30,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:11:30,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:11:30,499 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:11:30,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:11:30,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:11:30,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:11:30,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:11:30,504 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:30,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:30,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:11:30,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:11:30,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:11:30,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:11:30,505 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:11:30,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:11:30,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:11:30,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:11:30,835 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:11:30,837 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:11:30,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2025-04-14 00:11:32,294 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f71e9b1/41131dc8ff224652afc2ca68d5f304f9/FLAGe601fe3cc [2025-04-14 00:11:32,660 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:11:32,662 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2025-04-14 00:11:32,685 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f71e9b1/41131dc8ff224652afc2ca68d5f304f9/FLAGe601fe3cc [2025-04-14 00:11:33,345 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f71e9b1/41131dc8ff224652afc2ca68d5f304f9 [2025-04-14 00:11:33,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:11:33,349 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:11:33,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:33,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:11:33,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:11:33,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:33" (1/1) ... [2025-04-14 00:11:33,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46eae06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:33, skipping insertion in model container [2025-04-14 00:11:33,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:33" (1/1) ... [2025-04-14 00:11:33,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:11:34,149 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i[63614,63627] [2025-04-14 00:11:34,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:34,194 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:11:34,287 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i[63614,63627] [2025-04-14 00:11:34,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:34,379 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:11:34,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34 WrapperNode [2025-04-14 00:11:34,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:34,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:34,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:11:34,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:11:34,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,648 INFO L138 Inliner]: procedures = 396, calls = 206, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3772 [2025-04-14 00:11:34,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:34,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:11:34,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:11:34,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:11:34,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,940 INFO L175 MemorySlicer]: Split 700 memory accesses to 9 slices as follows [113, 2, 86, 36, 28, 22, 22, 25, 366]. 52 percent of accesses are in the largest equivalence class. The 39 initializations are split as follows [8, 2, 1, 4, 2, 2, 1, 3, 16]. The 287 writes are split as follows [56, 0, 29, 25, 6, 3, 7, 4, 157]. [2025-04-14 00:11:34,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:34,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,029 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:11:35,101 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:11:35,101 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:11:35,101 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:11:35,102 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (1/1) ... [2025-04-14 00:11:35,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:11:35,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-14 00:11:35,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-14 00:11:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2025-04-14 00:11:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2025-04-14 00:11:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2025-04-14 00:11:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:11:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-14 00:11:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-04-14 00:11:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-04-14 00:11:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-04-14 00:11:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-04-14 00:11:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-04-14 00:11:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2025-04-14 00:11:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2025-04-14 00:11:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2025-04-14 00:11:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2025-04-14 00:11:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-04-14 00:11:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-04-14 00:11:35,160 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:11:35,486 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:11:35,488 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:11:36,182 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:36,182 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:36,654 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:36,654 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:37,099 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:37,100 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:37,569 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:37,569 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,004 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,004 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,421 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,422 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,829 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,829 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1463-11: havoc TryPerformStackOp_~i~2#1; [2025-04-14 00:11:38,909 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:11:38,910 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:11:38,910 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:11:42,202 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,310 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,322 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,377 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,392 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,409 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,427 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,442 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,474 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,485 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,500 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,511 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,634 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,644 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,655 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:42,668 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:11:42,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:42 BoogieIcfgContainer [2025-04-14 00:11:42,671 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:11:42,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:11:42,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:11:42,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:11:42,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:11:33" (1/3) ... [2025-04-14 00:11:42,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107a3b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:42, skipping insertion in model container [2025-04-14 00:11:42,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:34" (2/3) ... [2025-04-14 00:11:42,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107a3b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:42, skipping insertion in model container [2025-04-14 00:11:42,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:42" (3/3) ... [2025-04-14 00:11:42,679 INFO L128 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2025-04-14 00:11:42,691 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:11:42,692 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elimination_backoff_stack.i that has 8 procedures, 269 locations, 366 edges, 1 initial locations, 0 loop locations, and 7 error locations. [2025-04-14 00:11:42,693 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:11:43,411 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:11:43,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 373 transitions, 774 flow [2025-04-14 00:11:44,097 INFO L116 PetriNetUnfolderBase]: 105/366 cut-off events. [2025-04-14 00:11:44,103 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:11:44,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 366 events. 105/366 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1716 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 376. Up to 11 conditions per place. [2025-04-14 00:11:44,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 373 transitions, 774 flow [2025-04-14 00:11:44,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 366 transitions, 753 flow [2025-04-14 00:11:44,151 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:11:44,162 INFO L340 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;@4abc3081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:11:44,162 INFO L341 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-04-14 00:11:44,192 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:11:44,192 INFO L116 PetriNetUnfolderBase]: 4/39 cut-off events. [2025-04-14 00:11:44,192 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:11:44,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:44,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:11:44,193 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONERROR_FUNCTION === [instrPop3Err0ASSERT_VIOLATIONERROR_FUNCTION, instrPop4Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2025-04-14 00:11:44,197 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2114853922, now seen corresponding path program 1 times [2025-04-14 00:11:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:44,204 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598737066] [2025-04-14 00:11:44,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:44,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:11:44,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:11:44,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:44,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:45,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598737066] [2025-04-14 00:11:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598737066] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:45,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:11:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795486740] [2025-04-14 00:11:45,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:45,962 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:11:45,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:45,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:11:45,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:11:45,989 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 373 [2025-04-14 00:11:45,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 366 transitions, 753 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2025-04-14 00:11:45,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:45,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 373 [2025-04-14 00:11:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand