/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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:49:35,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:49:35,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:49:35,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:49:35,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:49:35,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:49:35,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:49:35,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:49:35,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:49:35,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:49:35,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:49:35,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:49:35,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:49:35,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:49:35,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:49:35,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:49:35,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:49:35,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:49:35,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:49:35,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:49:35,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:49:35,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:49:35,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:49:35,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:49:35,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:49:35,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:49:35,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:49:35,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:49:35,450 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:49:35,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:49:35,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:49:35,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:49:35,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:49:35,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:49:35,594 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:49:35,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 18:49:36,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:49:36,802 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:49:36,802 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 18:49:36,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2a9777a/fb33e2cdb78b4b5487cd0a0dbb321ce3/FLAG129ff2416 [2023-08-03 18:49:36,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2a9777a/fb33e2cdb78b4b5487cd0a0dbb321ce3 [2023-08-03 18:49:36,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:49:36,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:49:36,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:49:36,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:49:36,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:49:36,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:49:36" (1/1) ... [2023-08-03 18:49:36,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423613d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:36, skipping insertion in model container [2023-08-03 18:49:36,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:49:36" (1/1) ... [2023-08-03 18:49:36,876 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:49:37,010 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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-03 18:49:37,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:49:37,177 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:49:37,187 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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-03 18:49:37,209 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:49:37,211 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:49:37,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:49:37,267 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:49:37,267 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:49:37,271 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:49:37,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37 WrapperNode [2023-08-03 18:49:37,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:49:37,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:49:37,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:49:37,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:49:37,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,324 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-08-03 18:49:37,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:49:37,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:49:37,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:49:37,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:49:37,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:49:37,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:49:37,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:49:37,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:49:37,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (1/1) ... [2023-08-03 18:49:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:49:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:49:37,370 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 18:49:37,372 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 18:49:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:49:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:49:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:49:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:49:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:49:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:49:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:49:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:49:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:49:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:49:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:49:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:49:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:49:37,400 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 18:49:37,482 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:49:37,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:49:37,662 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:49:37,794 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:49:37,794 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 18:49:37,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:49:37 BoogieIcfgContainer [2023-08-03 18:49:37,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:49:37,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:49:37,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:49:37,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:49:37,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:49:36" (1/3) ... [2023-08-03 18:49:37,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622ca942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:49:37, skipping insertion in model container [2023-08-03 18:49:37,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:37" (2/3) ... [2023-08-03 18:49:37,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622ca942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:49:37, skipping insertion in model container [2023-08-03 18:49:37,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:49:37" (3/3) ... [2023-08-03 18:49:37,802 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 18:49:37,806 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:49:37,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:49:37,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:49:37,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:49:37,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:49:37,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,926 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-03 18:49:37,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-03 18:49:37,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:49:37,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-03 18:49:37,993 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-03 18:49:37,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:37,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-03 18:49:37,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 1462 [2023-08-03 18:49:40,411 INFO L134 LiptonReduction]: Checked pairs total: 3929 [2023-08-03 18:49:40,411 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-03 18:49:40,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:49:40,423 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;@2dfb985, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:49:40,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:49:40,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:49:40,440 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 18:49:40,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:40,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:40,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:49:40,441 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 18:49:40,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash 14011630, now seen corresponding path program 1 times [2023-08-03 18:49:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:40,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253115136] [2023-08-03 18:49:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:40,688 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 18:49:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253115136] [2023-08-03 18:49:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253115136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:40,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:49:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:49:40,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359603917] [2023-08-03 18:49:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:40,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:49:40,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-03 18:49:40,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 18:49:40,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:40,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-03 18:49:40,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:49:40,825 INFO L124 PetriNetUnfolderBase]: 258/556 cut-off events. [2023-08-03 18:49:40,825 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 18:49:40,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 556 events. 258/556 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2811 event pairs, 48 based on Foata normal form. 25/497 useless extension candidates. Maximal degree in co-relation 906. Up to 352 conditions per place. [2023-08-03 18:49:40,832 INFO L140 encePairwiseOnDemand]: 183/187 looper letters, 29 selfloop transitions, 2 changer transitions 4/39 dead transitions. [2023-08-03 18:49:40,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 161 flow [2023-08-03 18:49:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:49:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:49:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-03 18:49:40,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276292335115864 [2023-08-03 18:49:40,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-03 18:49:40,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-03 18:49:40,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:49:40,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-03 18:49:40,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 18:49:40,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 18:49:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 18:49:40,858 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 3 states and 296 transitions. [2023-08-03 18:49:40,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 161 flow [2023-08-03 18:49:40,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 161 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:49:40,861 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 58 flow [2023-08-03 18:49:40,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-03 18:49:40,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-03 18:49:40,865 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 58 flow [2023-08-03 18:49:40,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 18:49:40,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:40,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:49:40,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:49:40,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:49:40,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 580320014, now seen corresponding path program 1 times [2023-08-03 18:49:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494407476] [2023-08-03 18:49:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:40,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:49:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:40,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:49:40,929 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:49:40,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 18:49:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 18:49:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 18:49:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:49:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 18:49:40,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:49:40,932 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:49:40,935 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:49:40,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:49:40,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:49:40,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:40,997 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-03 18:49:40,997 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:49:40,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-03 18:49:40,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:41,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:41,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:49:41,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:41,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:41,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-03 18:49:41,031 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-03 18:49:41,031 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:49:41,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-03 18:49:41,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 3436 [2023-08-03 18:49:43,122 INFO L134 LiptonReduction]: Checked pairs total: 9658 [2023-08-03 18:49:43,122 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-03 18:49:43,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:49:43,124 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;@2dfb985, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:49:43,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:49:43,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:49:43,127 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 18:49:43,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:43,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:43,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:49:43,127 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 18:49:43,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 21026254, now seen corresponding path program 1 times [2023-08-03 18:49:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:43,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912588068] [2023-08-03 18:49:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:43,217 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 18:49:43,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912588068] [2023-08-03 18:49:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912588068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:49:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:49:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305659493] [2023-08-03 18:49:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:43,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:49:43,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-08-03 18:49:43,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 18:49:43,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:43,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-08-03 18:49:43,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:49:44,742 INFO L124 PetriNetUnfolderBase]: 13202/19657 cut-off events. [2023-08-03 18:49:44,742 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-03 18:49:44,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38433 conditions, 19657 events. 13202/19657 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 130559 event pairs, 2594 based on Foata normal form. 567/17305 useless extension candidates. Maximal degree in co-relation 32700. Up to 17103 conditions per place. [2023-08-03 18:49:44,826 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 49 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-03 18:49:44,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 261 flow [2023-08-03 18:49:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:49:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:49:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-03 18:49:44,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481832543443917 [2023-08-03 18:49:44,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-03 18:49:44,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-03 18:49:44,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:49:44,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-03 18:49:44,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 18:49:44,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 18:49:44,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 18:49:44,833 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 102 flow. Second operand 3 states and 347 transitions. [2023-08-03 18:49:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 261 flow [2023-08-03 18:49:44,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 257 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 18:49:44,836 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 117 flow [2023-08-03 18:49:44,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-03 18:49:44,837 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-03 18:49:44,837 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 117 flow [2023-08-03 18:49:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 18:49:44,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:44,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:49:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:49:44,838 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 18:49:44,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1258713942, now seen corresponding path program 1 times [2023-08-03 18:49:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262434701] [2023-08-03 18:49:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:44,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:44,896 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 18:49:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262434701] [2023-08-03 18:49:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262434701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:49:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:49:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626559700] [2023-08-03 18:49:44,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:44,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:44,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:49:44,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-03 18:49:44,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 18:49:44,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:44,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-03 18:49:44,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:49:46,223 INFO L124 PetriNetUnfolderBase]: 12974/19241 cut-off events. [2023-08-03 18:49:46,223 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2023-08-03 18:49:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41090 conditions, 19241 events. 12974/19241 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 124628 event pairs, 9730 based on Foata normal form. 0/16332 useless extension candidates. Maximal degree in co-relation 26603. Up to 17937 conditions per place. [2023-08-03 18:49:46,301 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 35 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-03 18:49:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 204 flow [2023-08-03 18:49:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:49:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:49:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-03 18:49:46,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023696682464455 [2023-08-03 18:49:46,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-03 18:49:46,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-03 18:49:46,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:49:46,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-03 18:49:46,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 18:49:46,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 18:49:46,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 18:49:46,305 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 117 flow. Second operand 3 states and 318 transitions. [2023-08-03 18:49:46,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 204 flow [2023-08-03 18:49:46,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:49:46,306 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 126 flow [2023-08-03 18:49:46,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-03 18:49:46,306 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-03 18:49:46,306 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 126 flow [2023-08-03 18:49:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 18:49:46,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:46,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:49:46,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 18:49:46,307 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 18:49:46,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1176862390, now seen corresponding path program 1 times [2023-08-03 18:49:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158026392] [2023-08-03 18:49:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:46,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:49:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:46,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:49:46,324 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:49:46,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 18:49:46,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:49:46,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:49:46,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:49:46,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:49:46,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:49:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 18:49:46,325 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 18:49:46,328 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:49:46,328 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:49:46,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:49:46 BasicIcfg [2023-08-03 18:49:46,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:49:46,349 INFO L158 Benchmark]: Toolchain (without parser) took 9511.73ms. Allocated memory was 497.0MB in the beginning and 975.2MB in the end (delta: 478.2MB). Free memory was 453.5MB in the beginning and 307.5MB in the end (delta: 146.0MB). Peak memory consumption was 626.2MB. Max. memory is 16.0GB. [2023-08-03 18:49:46,349 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 329.3MB. Free memory is still 277.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:49:46,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.40ms. Allocated memory is still 497.0MB. Free memory was 453.5MB in the beginning and 430.6MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 18:49:46,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.32ms. Allocated memory is still 497.0MB. Free memory was 430.6MB in the beginning and 428.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 18:49:46,350 INFO L158 Benchmark]: Boogie Preprocessor took 19.14ms. Allocated memory is still 497.0MB. Free memory was 428.0MB in the beginning and 426.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:49:46,350 INFO L158 Benchmark]: RCFGBuilder took 450.79ms. Allocated memory is still 497.0MB. Free memory was 425.9MB in the beginning and 452.3MB in the end (delta: -26.4MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. [2023-08-03 18:49:46,350 INFO L158 Benchmark]: TraceAbstraction took 8551.46ms. Allocated memory was 497.0MB in the beginning and 975.2MB in the end (delta: 478.2MB). Free memory was 451.3MB in the beginning and 307.5MB in the end (delta: 143.8MB). Peak memory consumption was 621.8MB. Max. memory is 16.0GB. [2023-08-03 18:49:46,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 329.3MB. Free memory is still 277.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 434.40ms. Allocated memory is still 497.0MB. Free memory was 453.5MB in the beginning and 430.6MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.32ms. Allocated memory is still 497.0MB. Free memory was 430.6MB in the beginning and 428.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.14ms. Allocated memory is still 497.0MB. Free memory was 428.0MB in the beginning and 426.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 450.79ms. Allocated memory is still 497.0MB. Free memory was 425.9MB in the beginning and 452.3MB in the end (delta: -26.4MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. * TraceAbstraction took 8551.46ms. Allocated memory was 497.0MB in the beginning and 975.2MB in the end (delta: 478.2MB). Free memory was 451.3MB in the beginning and 307.5MB in the end (delta: 143.8MB). Peak memory consumption was 621.8MB. 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: 2.5s, 101 PlacesBefore, 30 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 1462 CoEnabledTransitionPairs, 7 FixpointIterations, 31 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 87 TotalNumberOfCompositions, 3929 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1609, independent: 1464, independent conditional: 0, independent unconditional: 1464, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 748, independent: 723, independent conditional: 0, independent unconditional: 723, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1609, independent: 741, independent conditional: 0, independent unconditional: 741, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 748, unknown conditional: 0, unknown unconditional: 748] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 122 PlacesBefore, 47 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 3436 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 94 TotalNumberOfCompositions, 9658 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3467, independent: 3263, independent conditional: 0, independent unconditional: 3263, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1702, independent: 1667, independent conditional: 0, independent unconditional: 1667, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3467, independent: 1596, independent conditional: 0, independent unconditional: 1596, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 1702, unknown conditional: 0, unknown unconditional: 1702] , Statistics on independence cache: Total cache size (in pairs): 181, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, 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; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2473[2]; [L791] 0 int asdf=0; VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=-1, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L738] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L738] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] 0 asdf++ VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 2 y$w_buff1 = y$w_buff0 [L735] 2 y$w_buff0 = 2 [L736] 2 y$w_buff1_used = y$w_buff0_used [L737] 2 y$w_buff0_used = (_Bool)1 [L738] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=2, y$w_buff1_used=1, y=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: 791]: 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: 793]: 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, 114 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, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 38 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=62occurred 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, 0.1s 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, 131 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: 5.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 127 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=126occurred 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 18:49:46,367 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...