/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_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:46:04,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:46:04,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:46:04,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:46:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:46:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:46:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:46:04,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:46:04,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:46:04,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:46:04,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:46:04,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:46:04,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:46:04,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:46:04,502 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:46:04,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:46:04,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:46:04,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:46:04,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:46:04,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:46:04,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:46:04,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:46:04,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:46:04,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:46:04,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:46:04,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:04,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:46:04,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:46:04,508 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:46:04,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:46:04,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:46:04,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:46:04,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:46:04,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:46:04,704 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:46:04,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:46:05,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:46:05,815 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:46:05,815 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:46:05,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deac8f96a/ad5492cd117049baa294b2201abfc625/FLAG6f845dfc7 [2023-08-03 17:46:05,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deac8f96a/ad5492cd117049baa294b2201abfc625 [2023-08-03 17:46:05,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:46:05,846 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:46:05,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:05,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:46:05,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:46:05,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:05" (1/1) ... [2023-08-03 17:46:05,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0651f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:05, skipping insertion in model container [2023-08-03 17:46:05,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:05" (1/1) ... [2023-08-03 17:46:05,894 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:46:06,036 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_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:46:06,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:06,210 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:46:06,218 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_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:46:06,238 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:46:06,239 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:46:06,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:06,286 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:06,287 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:06,291 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:46:06,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06 WrapperNode [2023-08-03 17:46:06,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:06,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:06,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:46:06,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:46:06,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,343 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2023-08-03 17:46:06,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:06,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:46:06,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:46:06,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:46:06,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:46:06,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:46:06,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:46:06,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:46:06,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (1/1) ... [2023-08-03 17:46:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:06,402 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 17:46:06,404 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 17:46:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:46:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:46:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:46:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:46:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:46:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:46:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:46:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:46:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:46:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:46:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:46:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:46:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:46:06,428 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 17:46:06,548 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:46:06,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:46:06,769 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:46:06,862 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:46:06,863 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:46:06,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:06 BoogieIcfgContainer [2023-08-03 17:46:06,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:46:06,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:46:06,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:46:06,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:46:06,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:46:05" (1/3) ... [2023-08-03 17:46:06,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fa495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:06, skipping insertion in model container [2023-08-03 17:46:06,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:06" (2/3) ... [2023-08-03 17:46:06,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fa495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:06, skipping insertion in model container [2023-08-03 17:46:06,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:06" (3/3) ... [2023-08-03 17:46:06,876 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi001_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:46:06,881 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:46:06,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:46:06,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:46:06,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:46:06,930 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,033 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:46:07,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:07,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 629 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:46:07,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,045 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:07,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:07,094 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:46:07,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:07,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 629 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:46:07,097 INFO L119 LiptonReduction]: Number of co-enabled transitions 1642 [2023-08-03 17:46:09,464 INFO L134 LiptonReduction]: Checked pairs total: 4215 [2023-08-03 17:46:09,464 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 17:46:09,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:09,476 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;@54c13a72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:09,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:46:09,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:09,479 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-03 17:46:09,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:09,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:09,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:46:09,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:09,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 14575213, now seen corresponding path program 1 times [2023-08-03 17:46:09,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913904925] [2023-08-03 17:46:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:09,752 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 17:46:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913904925] [2023-08-03 17:46:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913904925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:09,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:09,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:46:09,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193055194] [2023-08-03 17:46:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:09,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:09,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 198 [2023-08-03 17:46:09,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:46:09,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:09,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 198 [2023-08-03 17:46:09,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:09,948 INFO L124 PetriNetUnfolderBase]: 325/677 cut-off events. [2023-08-03 17:46:09,948 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 17:46:09,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 677 events. 325/677 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3484 event pairs, 64 based on Foata normal form. 30/608 useless extension candidates. Maximal degree in co-relation 1105. Up to 430 conditions per place. [2023-08-03 17:46:09,955 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 31 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-08-03 17:46:09,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 169 flow [2023-08-03 17:46:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-03 17:46:09,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269360269360269 [2023-08-03 17:46:09,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-03 17:46:09,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-03 17:46:09,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:09,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-03 17:46:09,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 17:46:09,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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 17:46:09,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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 17:46:09,982 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 64 flow. Second operand 3 states and 313 transitions. [2023-08-03 17:46:09,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 169 flow [2023-08-03 17:46:09,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:09,985 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 60 flow [2023-08-03 17:46:09,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-03 17:46:09,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-03 17:46:09,989 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 60 flow [2023-08-03 17:46:09,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:46:09,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:09,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:46:09,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:46:09,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:09,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1121934730, now seen corresponding path program 1 times [2023-08-03 17:46:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109460283] [2023-08-03 17:46:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:10,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:46:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:10,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:46:10,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:46:10,055 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:46:10,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:46:10,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:46:10,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:46:10,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:46:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:46:10,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:46:10,058 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:46:10,058 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:46:10,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:10,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,102 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:46:10,102 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:10,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 460 events. 30/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1976 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:46:10,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:10,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 272 flow [2023-08-03 17:46:10,137 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 17:46:10,137 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:10,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 460 events. 30/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1976 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:46:10,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 3928 [2023-08-03 17:46:12,532 INFO L134 LiptonReduction]: Checked pairs total: 14516 [2023-08-03 17:46:12,532 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 17:46:12,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:12,534 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;@54c13a72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:12,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:46:12,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:12,536 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 17:46:12,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:12,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:12,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:46:12,536 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 17:46:12,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 21966105, now seen corresponding path program 1 times [2023-08-03 17:46:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:12,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466571043] [2023-08-03 17:46:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:12,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:12,615 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 17:46:12,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:12,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466571043] [2023-08-03 17:46:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466571043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:46:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968502305] [2023-08-03 17:46:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:12,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:12,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:12,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-03 17:46:12,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 17:46:12,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-03 17:46:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:15,053 INFO L124 PetriNetUnfolderBase]: 20420/29914 cut-off events. [2023-08-03 17:46:15,053 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2023-08-03 17:46:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58419 conditions, 29914 events. 20420/29914 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 206980 event pairs, 3926 based on Foata normal form. 837/26022 useless extension candidates. Maximal degree in co-relation 49655. Up to 26049 conditions per place. [2023-08-03 17:46:15,258 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 53 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 17:46:15,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 281 flow [2023-08-03 17:46:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-03 17:46:15,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565610859728507 [2023-08-03 17:46:15,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-03 17:46:15,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-03 17:46:15,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:15,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-03 17:46:15,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 17:46:15,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 17:46:15,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 17:46:15,262 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 110 flow. Second operand 3 states and 369 transitions. [2023-08-03 17:46:15,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 281 flow [2023-08-03 17:46:15,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 277 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:15,265 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 125 flow [2023-08-03 17:46:15,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-03 17:46:15,265 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-03 17:46:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 125 flow [2023-08-03 17:46:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 17:46:15,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:15,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:46:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:46:15,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:15,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash -374074734, now seen corresponding path program 1 times [2023-08-03 17:46:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227903158] [2023-08-03 17:46:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:15,314 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 17:46:15,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227903158] [2023-08-03 17:46:15,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227903158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:15,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:15,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:46:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922746905] [2023-08-03 17:46:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:15,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:15,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:15,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-08-03 17:46:15,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 17:46:15,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:15,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-08-03 17:46:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:17,469 INFO L124 PetriNetUnfolderBase]: 20048/29237 cut-off events. [2023-08-03 17:46:17,469 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2023-08-03 17:46:17,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62198 conditions, 29237 events. 20048/29237 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 194461 event pairs, 15274 based on Foata normal form. 0/24502 useless extension candidates. Maximal degree in co-relation 40340. Up to 27351 conditions per place. [2023-08-03 17:46:17,594 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 17:46:17,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 216 flow [2023-08-03 17:46:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-03 17:46:17,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-03 17:46:17,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-03 17:46:17,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-03 17:46:17,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:17,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-03 17:46:17,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 17:46:17,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 17:46:17,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 17:46:17,598 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 125 flow. Second operand 3 states and 338 transitions. [2023-08-03 17:46:17,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 216 flow [2023-08-03 17:46:17,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:46:17,600 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 134 flow [2023-08-03 17:46:17,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-03 17:46:17,600 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-03 17:46:17,600 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 134 flow [2023-08-03 17:46:17,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 17:46:17,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:17,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:17,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:46:17,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:17,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2007124478, now seen corresponding path program 1 times [2023-08-03 17:46:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807999483] [2023-08-03 17:46:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:17,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:17,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:46:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:17,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:46:17,622 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:46:17,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:46:17,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:46:17,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:46:17,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:46:17,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:46:17,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:46:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:46:17,623 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:46:17,626 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:46:17,626 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:46:17,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:46:17 BasicIcfg [2023-08-03 17:46:17,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:46:17,651 INFO L158 Benchmark]: Toolchain (without parser) took 11805.68ms. Allocated memory was 369.1MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 313.3MB in the beginning and 827.6MB in the end (delta: -514.3MB). Peak memory consumption was 842.0MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,652 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 369.1MB. Free memory was 321.8MB in the beginning and 321.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:46:17,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.26ms. Allocated memory is still 369.1MB. Free memory was 312.9MB in the beginning and 289.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.38ms. Allocated memory is still 369.1MB. Free memory was 289.9MB in the beginning and 287.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,652 INFO L158 Benchmark]: Boogie Preprocessor took 32.15ms. Allocated memory is still 369.1MB. Free memory was 287.6MB in the beginning and 285.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,653 INFO L158 Benchmark]: RCFGBuilder took 488.10ms. Allocated memory was 369.1MB in the beginning and 530.6MB in the end (delta: 161.5MB). Free memory was 285.7MB in the beginning and 481.7MB in the end (delta: -196.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,653 INFO L158 Benchmark]: TraceAbstraction took 10785.19ms. Allocated memory was 530.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 480.7MB in the beginning and 827.6MB in the end (delta: -346.9MB). Peak memory consumption was 846.2MB. Max. memory is 16.0GB. [2023-08-03 17:46:17,655 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 369.1MB. Free memory was 321.8MB in the beginning and 321.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 444.26ms. Allocated memory is still 369.1MB. Free memory was 312.9MB in the beginning and 289.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.38ms. Allocated memory is still 369.1MB. Free memory was 289.9MB in the beginning and 287.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.15ms. Allocated memory is still 369.1MB. Free memory was 287.6MB in the beginning and 285.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 488.10ms. Allocated memory was 369.1MB in the beginning and 530.6MB in the end (delta: 161.5MB). Free memory was 285.7MB in the beginning and 481.7MB in the end (delta: -196.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 10785.19ms. Allocated memory was 530.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 480.7MB in the beginning and 827.6MB in the end (delta: -346.9MB). Peak memory consumption was 846.2MB. 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: 2.4s, 106 PlacesBefore, 31 PlacesAfterwards, 105 TransitionsBefore, 27 TransitionsAfterwards, 1642 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2011, independent: 1874, independent conditional: 0, independent unconditional: 1874, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 876, independent: 849, independent conditional: 0, independent unconditional: 849, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2011, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 876, unknown conditional: 0, unknown unconditional: 876] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 129 PlacesBefore, 51 PlacesAfterwards, 124 TransitionsBefore, 43 TransitionsAfterwards, 3928 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 14516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6112, independent: 5806, independent conditional: 0, independent unconditional: 5806, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1928, independent: 1887, independent conditional: 0, independent unconditional: 1887, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6112, independent: 3919, independent conditional: 0, independent unconditional: 3919, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 1928, unknown conditional: 0, unknown unconditional: 1928] , Statistics on independence cache: Total cache size (in pairs): 263, Positive cache size: 242, Positive conditional cache size: 0, Positive unconditional cache size: 242, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, 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: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L734] 0 int z = 0; [L735] 0 _Bool weak$$choice0; [L736] 0 _Bool weak$$choice2; [L815] 0 pthread_t t1601[2]; [L816] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1601={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1601[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1601[asdf], ((void *)0), P0, ((void *)0))=-2, t1601={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L740] 1 x$w_buff1 = x$w_buff0 [L741] 1 x$w_buff0 = 1 [L742] 1 x$w_buff1_used = x$w_buff0_used [L743] 1 x$w_buff0_used = (_Bool)1 [L744] CALL 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L744] RET 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L745] 1 x$r_buff1_thd0 = x$r_buff0_thd0 [L746] 1 x$r_buff1_thd1 = x$r_buff0_thd1 [L747] 1 x$r_buff1_thd2 = x$r_buff0_thd2 [L748] 1 x$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1601={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1601[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1601[asdf], ((void *)0), P0, ((void *)0))=-1, t1601={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L740] 2 x$w_buff1 = x$w_buff0 [L741] 2 x$w_buff0 = 1 [L742] 2 x$w_buff1_used = x$w_buff0_used [L743] 2 x$w_buff0_used = (_Bool)1 [L744] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, 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: 818]: 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: 816]: 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 5 procedures, 121 locations, 5 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: 3.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 40 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=64occurred 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, 0.2s 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 7 procedures, 140 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: 7.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 1 mSDtfsCounter, 132 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=134occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 17:46:17,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...