/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:04:30,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:04:30,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:04:30,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:04:30,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:04:30,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:04:30,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:04:30,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:04:30,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:04:30,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:04:30,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:04:30,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:04:30,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:04:30,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:04:30,147 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:04:30,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:04:30,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:04:30,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:04:30,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:04:30,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:04:30,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:04:30,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:04:30,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:04:30,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:04:30,157 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:04:30,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:04:30,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:04:30,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:04:30,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:04:30,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:04:30,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:30,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:04:30,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:04:30,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:04:30,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:04:30,161 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:04:30,161 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:04:30,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:04:30,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:04:30,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:04:30,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:04:30,421 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:04:30,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.oepc_bound2.i [2023-08-03 17:04:31,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:04:31,732 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:04:31,733 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.oepc_bound2.i [2023-08-03 17:04:31,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c77151a1/16782b573ac242479c4a3938880cce8d/FLAG9c8b4facf [2023-08-03 17:04:31,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c77151a1/16782b573ac242479c4a3938880cce8d [2023-08-03 17:04:31,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:04:31,759 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:04:31,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:31,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:04:31,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:04:31,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:31" (1/1) ... [2023-08-03 17:04:31,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207a2cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:31, skipping insertion in model container [2023-08-03 17:04:31,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:31" (1/1) ... [2023-08-03 17:04:31,802 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:04:31,922 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.oepc_bound2.i[945,958] [2023-08-03 17:04:32,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:32,065 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:04:32,074 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.oepc_bound2.i[945,958] [2023-08-03 17:04:32,081 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:32,083 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:32,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:32,147 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:32,148 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:32,154 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:04:32,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32 WrapperNode [2023-08-03 17:04:32,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:32,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:32,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:04:32,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:04:32,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,231 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2023-08-03 17:04:32,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:32,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:04:32,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:04:32,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:04:32,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:04:32,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:04:32,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:04:32,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:04:32,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (1/1) ... [2023-08-03 17:04:32,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:04:32,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:04:32,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:04:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:04:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:04:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:04:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:04:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:04:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:04:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:04:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:04:32,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:04:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:04:32,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:04:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:04:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:04:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:04:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:04:32,361 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:04:32,515 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:04:32,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:04:32,876 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:04:32,990 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:04:32,990 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:04:32,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:32 BoogieIcfgContainer [2023-08-03 17:04:32,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:04:32,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:04:32,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:04:32,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:04:32,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:04:31" (1/3) ... [2023-08-03 17:04:32,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b3d58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:32, skipping insertion in model container [2023-08-03 17:04:33,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:32" (2/3) ... [2023-08-03 17:04:33,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b3d58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:33, skipping insertion in model container [2023-08-03 17:04:33,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:32" (3/3) ... [2023-08-03 17:04:33,001 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix010.oepc_bound2.i [2023-08-03 17:04:33,007 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:04:33,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:04:33,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:04:33,015 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:04:33,070 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:04:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,237 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:04:33,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:33,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2029 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 277. Up to 16 conditions per place. [2023-08-03 17:04:33,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:04:33,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,271 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:04:33,331 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:04:33,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:33,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2029 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 277. Up to 16 conditions per place. [2023-08-03 17:04:33,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 3116 [2023-08-03 17:04:36,772 INFO L134 LiptonReduction]: Checked pairs total: 8111 [2023-08-03 17:04:36,773 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-03 17:04:36,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:04:36,789 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4cc1f33d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:04:36,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:04:36,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:04:36,792 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:04:36,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:36,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:36,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:04:36,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:04:36,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash 17912630, now seen corresponding path program 1 times [2023-08-03 17:04:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317687973] [2023-08-03 17:04:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:04:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:04:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:04:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317687973] [2023-08-03 17:04:37,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317687973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:04:37,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:04:37,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:04:37,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568984619] [2023-08-03 17:04:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:04:37,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:04:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:04:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:04:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:04:37,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 249 [2023-08-03 17:04:37,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2023-08-03 17:04:37,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:04:37,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 249 [2023-08-03 17:04:37,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:04:37,868 INFO L124 PetriNetUnfolderBase]: 3071/5199 cut-off events. [2023-08-03 17:04:37,868 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 17:04:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10049 conditions, 5199 events. 3071/5199 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 33620 event pairs, 824 based on Foata normal form. 180/4778 useless extension candidates. Maximal degree in co-relation 8470. Up to 3262 conditions per place. [2023-08-03 17:04:37,895 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 47 selfloop transitions, 2 changer transitions 4/59 dead transitions. [2023-08-03 17:04:37,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 245 flow [2023-08-03 17:04:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:04:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:04:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-03 17:04:37,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528781793842035 [2023-08-03 17:04:37,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-03 17:04:37,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-03 17:04:37,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:04:37,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-03 17:04:37,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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) [2023-08-03 17:04:37,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2023-08-03 17:04:37,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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) [2023-08-03 17:04:37,930 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 89 flow. Second operand 3 states and 413 transitions. [2023-08-03 17:04:37,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 245 flow [2023-08-03 17:04:37,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:04:37,935 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 85 flow [2023-08-03 17:04:37,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-03 17:04:37,939 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 17:04:37,939 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 85 flow [2023-08-03 17:04:37,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2023-08-03 17:04:37,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:37,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:04:37,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:04:37,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:04:37,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash 34230960, now seen corresponding path program 1 times [2023-08-03 17:04:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:37,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540629763] [2023-08-03 17:04:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:04:37,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:04:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:04:38,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:04:38,009 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:04:38,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:04:38,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:04:38,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:04:38,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:04:38,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:04:38,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:04:38,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:04:38,016 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:04:38,019 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:04:38,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:04:38,054 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:04:38,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,196 INFO L124 PetriNetUnfolderBase]: 93/1411 cut-off events. [2023-08-03 17:04:38,196 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:04:38,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1509 conditions, 1411 events. 93/1411 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9793 event pairs, 0 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 1025. Up to 54 conditions per place. [2023-08-03 17:04:38,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:04:38,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:04:38,372 INFO L124 PetriNetUnfolderBase]: 93/1411 cut-off events. [2023-08-03 17:04:38,373 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:04:38,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1509 conditions, 1411 events. 93/1411 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9793 event pairs, 0 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 1025. Up to 54 conditions per place. [2023-08-03 17:04:38,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 7632 [2023-08-03 17:04:41,827 INFO L134 LiptonReduction]: Checked pairs total: 26167 [2023-08-03 17:04:41,827 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-03 17:04:41,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:04:41,830 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4cc1f33d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:04:41,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:04:41,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:04:41,832 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:04:41,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:41,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:04:41,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:04:41,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 27547668, now seen corresponding path program 1 times [2023-08-03 17:04:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141614841] [2023-08-03 17:04:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:04:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:04:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:04:41,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141614841] [2023-08-03 17:04:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141614841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:04:41,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:04:41,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:04:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060249004] [2023-08-03 17:04:41,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:04:41,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:04:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:04:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:04:41,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:04:41,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 285 [2023-08-03 17:04:41,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2023-08-03 17:04:41,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:04:41,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 285 [2023-08-03 17:04:41,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:05:55,097 INFO L124 PetriNetUnfolderBase]: 633758/832618 cut-off events. [2023-08-03 17:05:55,097 INFO L125 PetriNetUnfolderBase]: For 9452/9452 co-relation queries the response was YES. [2023-08-03 17:05:57,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635941 conditions, 832618 events. 633758/832618 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 25375. Compared 6526679 event pairs, 105182 based on Foata normal form. 17577/755138 useless extension candidates. Maximal degree in co-relation 1377067. Up to 729279 conditions per place. [2023-08-03 17:06:00,375 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 75 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-03 17:06:00,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 401 flow [2023-08-03 17:06:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:06:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:06:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-03 17:06:00,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801169590643275 [2023-08-03 17:06:00,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-03 17:06:00,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-03 17:06:00,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:06:00,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-03 17:06:00,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2023-08-03 17:06:00,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2023-08-03 17:06:00,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2023-08-03 17:06:00,382 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 156 flow. Second operand 3 states and 496 transitions. [2023-08-03 17:06:00,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 401 flow [2023-08-03 17:06:00,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 395 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:06:00,395 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 169 flow [2023-08-03 17:06:00,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-08-03 17:06:00,396 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-03 17:06:00,396 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 169 flow [2023-08-03 17:06:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2023-08-03 17:06:00,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:06:00,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:06:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:06:00,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:06:00,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:06:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 631023886, now seen corresponding path program 1 times [2023-08-03 17:06:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:06:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722879282] [2023-08-03 17:06:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:06:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:06:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:06:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:06:00,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:06:00,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722879282] [2023-08-03 17:06:00,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722879282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:06:00,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:06:00,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:06:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138598288] [2023-08-03 17:06:00,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:06:00,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:06:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:06:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:06:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:06:00,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-03 17:06:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-08-03 17:06:00,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:06:00,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-03 17:06:00,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:07:16,706 INFO L124 PetriNetUnfolderBase]: 618374/806660 cut-off events. [2023-08-03 17:07:16,707 INFO L125 PetriNetUnfolderBase]: For 61834/61834 co-relation queries the response was YES. [2023-08-03 17:07:19,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695067 conditions, 806660 events. 618374/806660 cut-off events. For 61834/61834 co-relation queries the response was YES. Maximal size of possible extension queue 23359. Compared 5998895 event pairs, 518026 based on Foata normal form. 0/700585 useless extension candidates. Maximal degree in co-relation 1116380. Up to 771849 conditions per place. [2023-08-03 17:07:22,149 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 48 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-03 17:07:22,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 282 flow [2023-08-03 17:07:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:07:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:07:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 17:07:22,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5309941520467836 [2023-08-03 17:07:22,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 17:07:22,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 17:07:22,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:07:22,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 17:07:22,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2023-08-03 17:07:22,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2023-08-03 17:07:22,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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) [2023-08-03 17:07:22,168 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 169 flow. Second operand 3 states and 454 transitions. [2023-08-03 17:07:22,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 282 flow [2023-08-03 17:07:22,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:07:22,222 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 178 flow [2023-08-03 17:07:22,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2023-08-03 17:07:22,225 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-03 17:07:22,225 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 178 flow [2023-08-03 17:07:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-08-03 17:07:22,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:07:22,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:07:22,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:07:22,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:07:22,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:07:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -746860117, now seen corresponding path program 1 times [2023-08-03 17:07:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:07:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505770261] [2023-08-03 17:07:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:07:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:07:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:07:22,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:07:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:07:22,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:07:22,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:07:22,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:07:22,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:07:22,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:07:22,305 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:07:22,309 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:07:22,309 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:07:22,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:07:22 BasicIcfg [2023-08-03 17:07:22,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:07:22,378 INFO L158 Benchmark]: Toolchain (without parser) took 170619.72ms. Allocated memory was 547.4MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 498.1MB in the beginning and 9.3GB in the end (delta: -8.8GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 17:07:22,379 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 306.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:07:22,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.33ms. Allocated memory is still 547.4MB. Free memory was 498.1MB in the beginning and 474.3MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:07:22,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.73ms. Allocated memory is still 547.4MB. Free memory was 474.3MB in the beginning and 471.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:07:22,380 INFO L158 Benchmark]: Boogie Preprocessor took 54.13ms. Allocated memory is still 547.4MB. Free memory was 471.6MB in the beginning and 469.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:07:22,380 INFO L158 Benchmark]: RCFGBuilder took 705.77ms. Allocated memory is still 547.4MB. Free memory was 469.5MB in the beginning and 490.3MB in the end (delta: -20.8MB). Peak memory consumption was 20.8MB. Max. memory is 16.0GB. [2023-08-03 17:07:22,380 INFO L158 Benchmark]: TraceAbstraction took 169383.46ms. Allocated memory was 547.4MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 490.3MB in the beginning and 9.3GB in the end (delta: -8.8GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 17:07:22,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 306.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 395.33ms. Allocated memory is still 547.4MB. Free memory was 498.1MB in the beginning and 474.3MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.73ms. Allocated memory is still 547.4MB. Free memory was 474.3MB in the beginning and 471.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 54.13ms. Allocated memory is still 547.4MB. Free memory was 471.6MB in the beginning and 469.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 705.77ms. Allocated memory is still 547.4MB. Free memory was 469.5MB in the beginning and 490.3MB in the end (delta: -20.8MB). Peak memory consumption was 20.8MB. Max. memory is 16.0GB. * TraceAbstraction took 169383.46ms. Allocated memory was 547.4MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 490.3MB in the beginning and 9.3GB in the end (delta: -8.8GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 138 PlacesBefore, 43 PlacesAfterwards, 136 TransitionsBefore, 37 TransitionsAfterwards, 3116 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 113 TotalNumberOfCompositions, 8111 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3616, independent: 3425, independent conditional: 0, independent unconditional: 3425, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1615, independent: 1584, independent conditional: 0, independent unconditional: 1584, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3616, independent: 1841, independent conditional: 0, independent unconditional: 1841, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 1615, unknown conditional: 0, unknown unconditional: 1615] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 172 PlacesBefore, 72 PlacesAfterwards, 164 TransitionsBefore, 60 TransitionsAfterwards, 7632 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 121 TotalNumberOfCompositions, 26167 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11066, independent: 10693, independent conditional: 0, independent unconditional: 10693, dependent: 373, dependent conditional: 0, dependent unconditional: 373, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3824, independent: 3756, independent conditional: 0, independent unconditional: 3756, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11066, independent: 6937, independent conditional: 0, independent unconditional: 6937, dependent: 305, dependent conditional: 0, dependent unconditional: 305, unknown: 3824, unknown conditional: 0, unknown unconditional: 3824] , Statistics on independence cache: Total cache size (in pairs): 552, Positive cache size: 513, Positive conditional cache size: 0, Positive unconditional cache size: 513, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool a$flush_delayed; [L723] 0 int a$mem_tmp; [L724] 0 _Bool a$r_buff0_thd0; [L725] 0 _Bool a$r_buff0_thd1; [L726] 0 _Bool a$r_buff0_thd2; [L727] 0 _Bool a$r_buff0_thd3; [L728] 0 _Bool a$r_buff1_thd0; [L729] 0 _Bool a$r_buff1_thd1; [L730] 0 _Bool a$r_buff1_thd2; [L731] 0 _Bool a$r_buff1_thd3; [L732] 0 _Bool a$read_delayed; [L733] 0 int *a$read_delayed_var; [L734] 0 int a$w_buff0; [L735] 0 _Bool a$w_buff0_used; [L736] 0 int a$w_buff1; [L737] 0 _Bool a$w_buff1_used; [L738] 0 _Bool main$tmp_guard0; [L739] 0 _Bool main$tmp_guard1; [L741] 0 int x = 0; [L743] 0 int y = 0; [L745] 0 int z = 0; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L850] 0 pthread_t t257[2]; [L851] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t257={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L851] COND TRUE 0 asdf<2 [L851] FCALL, FORK 0 pthread_create(&t257[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t257[asdf], ((void *)0), P0, ((void *)0))=-1, t257={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L751] 1 a$w_buff1 = a$w_buff0 [L752] 1 a$w_buff0 = 1 [L753] 1 a$w_buff1_used = a$w_buff0_used [L754] 1 a$w_buff0_used = (_Bool)1 [L755] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L755] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L756] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L757] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L758] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L759] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L760] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L851] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t257={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L851] COND TRUE 0 asdf<2 [L851] FCALL, FORK 0 pthread_create(&t257[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t257[asdf], ((void *)0), P0, ((void *)0))=0, t257={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L751] 2 a$w_buff1 = a$w_buff0 [L752] 2 a$w_buff0 = 1 [L753] 2 a$w_buff1_used = a$w_buff0_used [L754] 2 a$w_buff0_used = (_Bool)1 [L755] CALL 2 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=1, a$w_buff1_used=1, a=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 160 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 188 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 164.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 160.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 2 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:07:22,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...