/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_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:58:20,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:58:21,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:58:21,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:58:21,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:58:21,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:58:21,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:58:21,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:58:21,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:58:21,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:58:21,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:58:21,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:58:21,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:58:21,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:58:21,108 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:58:21,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:58:21,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:58:21,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:58:21,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:58:21,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:58:21,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:58:21,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:58:21,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:58:21,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:58:21,111 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:58:21,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:58:21,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:58:21,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:58:21,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:58:21,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:58:21,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:58:21,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:58:21,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:58:21,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:58:21,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:58:21,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:58:21,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:58:21,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:58:21,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:58:21,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:58:21,114 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:58:21,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:58:21,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:58:21,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:58:21,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:58:21,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:58:21,369 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:58:21,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:58:22,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:58:22,800 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:58:22,800 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:58:22,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848f046bc/50bab6a8ebfe483f80eb6c1810de8246/FLAGb219eaa16 [2023-08-03 17:58:22,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848f046bc/50bab6a8ebfe483f80eb6c1810de8246 [2023-08-03 17:58:22,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:58:22,831 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:58:22,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:58:22,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:58:22,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:58:22,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:58:22" (1/1) ... [2023-08-03 17:58:22,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd3fbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:22, skipping insertion in model container [2023-08-03 17:58:22,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:58:22" (1/1) ... [2023-08-03 17:58:22,899 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:58:23,063 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_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-03 17:58:23,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:58:23,318 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:58:23,342 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_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-03 17:58:23,363 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:58:23,364 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:58:23,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:58:23,435 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:58:23,436 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:58:23,441 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:58:23,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23 WrapperNode [2023-08-03 17:58:23,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:58:23,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:58:23,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:58:23,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:58:23,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,520 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2023-08-03 17:58:23,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:58:23,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:58:23,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:58:23,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:58:23,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:58:23,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:58:23,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:58:23,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:58:23,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (1/1) ... [2023-08-03 17:58:23,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:58:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:58:23,617 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 17:58:23,631 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 17:58:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:58:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:58:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:58:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:58:23,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:58:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:58:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:58:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:58:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:58:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:58:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:58:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:58:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:58:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:58:23,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:58:23,659 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 17:58:23,769 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:58:23,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:58:24,190 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:58:24,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:58:24,342 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:58:24,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:58:24 BoogieIcfgContainer [2023-08-03 17:58:24,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:58:24,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:58:24,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:58:24,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:58:24,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:58:22" (1/3) ... [2023-08-03 17:58:24,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11508c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:58:24, skipping insertion in model container [2023-08-03 17:58:24,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:58:23" (2/3) ... [2023-08-03 17:58:24,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11508c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:58:24, skipping insertion in model container [2023-08-03 17:58:24,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:58:24" (3/3) ... [2023-08-03 17:58:24,354 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe004_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:58:24,361 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:58:24,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:58:24,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:58:24,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:58:24,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:58:24,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,606 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-03 17:58:24,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:58:24,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1974 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 17:58:24,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:58:24,637 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:58:24,711 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-03 17:58:24,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:58:24,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1974 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-03 17:58:24,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 2728 [2023-08-03 17:58:27,976 INFO L134 LiptonReduction]: Checked pairs total: 6841 [2023-08-03 17:58:27,976 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 17:58:27,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:58:27,992 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;@78c20b5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:58:27,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:58:27,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:58:27,996 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:58:27,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:58:27,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:58:27,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:58:27,997 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 17:58:28,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:58:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash 19300067, now seen corresponding path program 1 times [2023-08-03 17:58:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:58:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463196722] [2023-08-03 17:58:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:58:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:28,372 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 17:58:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:58:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463196722] [2023-08-03 17:58:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463196722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:58:28,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:58:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:58:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521052613] [2023-08-03 17:58:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:58:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:58:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:58:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:58:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:58:28,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 237 [2023-08-03 17:58:28,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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 17:58:28,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:58:28,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 237 [2023-08-03 17:58:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:58:29,089 INFO L124 PetriNetUnfolderBase]: 2468/4196 cut-off events. [2023-08-03 17:58:29,090 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 17:58:29,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8159 conditions, 4196 events. 2468/4196 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 26530 event pairs, 650 based on Foata normal form. 150/3860 useless extension candidates. Maximal degree in co-relation 6897. Up to 2665 conditions per place. [2023-08-03 17:58:29,111 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 45 selfloop transitions, 2 changer transitions 4/56 dead transitions. [2023-08-03 17:58:29,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 235 flow [2023-08-03 17:58:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:58:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:58:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-03 17:58:29,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358649789029536 [2023-08-03 17:58:29,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-03 17:58:29,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-03 17:58:29,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:58:29,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-03 17:58:29,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 17:58:29,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 17:58:29,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 17:58:29,136 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 85 flow. Second operand 3 states and 381 transitions. [2023-08-03 17:58:29,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 235 flow [2023-08-03 17:58:29,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:58:29,141 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 81 flow [2023-08-03 17:58:29,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-03 17:58:29,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-03 17:58:29,145 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 81 flow [2023-08-03 17:58:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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 17:58:29,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:58:29,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:58:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:58:29,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:58:29,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:58:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1367570959, now seen corresponding path program 1 times [2023-08-03 17:58:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:58:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678628102] [2023-08-03 17:58:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:58:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:58:29,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:58:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:58:29,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:58:29,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:58:29,193 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:58:29,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:58:29,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:58:29,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:58:29,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:58:29,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:58:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:58:29,197 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:58:29,199 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:58:29,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:58:29,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:58:29,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,416 INFO L124 PetriNetUnfolderBase]: 93/1376 cut-off events. [2023-08-03 17:58:29,417 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:58:29,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1376 events. 93/1376 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9473 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 17:58:29,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,428 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:58:29,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:58:29,573 INFO L124 PetriNetUnfolderBase]: 93/1376 cut-off events. [2023-08-03 17:58:29,573 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:58:29,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1376 events. 93/1376 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9473 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 17:58:29,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 6560 [2023-08-03 17:58:33,002 INFO L134 LiptonReduction]: Checked pairs total: 19291 [2023-08-03 17:58:33,002 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-03 17:58:33,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:58:33,005 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;@78c20b5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:58:33,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:58:33,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:58:33,007 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:58:33,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:58:33,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:58:33,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:58:33,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:58:33,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:58:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash 28283062, now seen corresponding path program 1 times [2023-08-03 17:58:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:58:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656070828] [2023-08-03 17:58:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:58:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:33,142 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 17:58:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:58:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656070828] [2023-08-03 17:58:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656070828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:58:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:58:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:58:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874958466] [2023-08-03 17:58:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:58:33,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:58:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:58:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:58:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:58:33,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 17:58:33,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 17:58:33,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:58:33,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 17:58:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:59:52,810 INFO L124 PetriNetUnfolderBase]: 633758/829591 cut-off events. [2023-08-03 17:59:52,810 INFO L125 PetriNetUnfolderBase]: For 9581/9581 co-relation queries the response was YES. [2023-08-03 17:59:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1633196 conditions, 829591 events. 633758/829591 cut-off events. For 9581/9581 co-relation queries the response was YES. Maximal size of possible extension queue 19532. Compared 6149470 event pairs, 105203 based on Foata normal form. 17577/758072 useless extension candidates. Maximal degree in co-relation 1376151. Up to 729279 conditions per place. [2023-08-03 17:59:57,839 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 75 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-03 17:59:57,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 389 flow [2023-08-03 17:59:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:59:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:59:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 17:59:57,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667915106117354 [2023-08-03 17:59:57,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 17:59:57,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 17:59:57,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:59:57,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 17:59:57,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:57,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 17:59:57,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 17:59:57,848 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 144 flow. Second operand 3 states and 454 transitions. [2023-08-03 17:59:57,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 389 flow [2023-08-03 17:59:57,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 383 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:59:57,871 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 157 flow [2023-08-03 17:59:57,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-03 17:59:57,871 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 17:59:57,872 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 157 flow [2023-08-03 17:59:57,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 17:59:57,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:59:57,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:59:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:59:57,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:59:57,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:59:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1197768292, now seen corresponding path program 1 times [2023-08-03 17:59:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:59:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795770538] [2023-08-03 17:59:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:59:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:59:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:59:57,916 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 17:59:57,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:59:57,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795770538] [2023-08-03 17:59:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795770538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:59:57,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:59:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:59:57,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950436531] [2023-08-03 17:59:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:59:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:59:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:59:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:59:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:59:57,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-03 17:59:57,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 17:59:57,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:59:57,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-03 17:59:57,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:01:18,928 INFO L124 PetriNetUnfolderBase]: 618374/780817 cut-off events. [2023-08-03 18:01:18,928 INFO L125 PetriNetUnfolderBase]: For 61744/61744 co-relation queries the response was YES. [2023-08-03 18:01:21,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670446 conditions, 780817 events. 618374/780817 cut-off events. For 61744/61744 co-relation queries the response was YES. Maximal size of possible extension queue 17736. Compared 5069985 event pairs, 518026 based on Foata normal form. 0/692642 useless extension candidates. Maximal degree in co-relation 1099253. Up to 771849 conditions per place. [2023-08-03 18:01:24,241 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 48 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-03 18:01:24,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 270 flow [2023-08-03 18:01:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:01:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:01:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-08-03 18:01:24,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143570536828964 [2023-08-03 18:01:24,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-08-03 18:01:24,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-08-03 18:01:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:01:24,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-08-03 18:01:24,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:01:24,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 18:01:24,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 18:01:24,248 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 157 flow. Second operand 3 states and 412 transitions. [2023-08-03 18:01:24,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 270 flow [2023-08-03 18:01:24,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:01:24,313 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 166 flow [2023-08-03 18:01:24,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-03 18:01:24,314 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-03 18:01:24,314 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 166 flow [2023-08-03 18:01:24,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 18:01:24,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:01:24,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:01:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 18:01:24,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:01:24,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:01:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash -893197626, now seen corresponding path program 1 times [2023-08-03 18:01:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:01:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331167728] [2023-08-03 18:01:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:01:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:01:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:01:24,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:01:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:01:24,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:01:24,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:01:24,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 18:01:24,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 18:01:24,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 18:01:24,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 18:01:24,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 18:01:24,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 18:01:24,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 18:01:24,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 18:01:24,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 18:01:24,385 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:01:24,385 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:01:24,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:01:24 BasicIcfg [2023-08-03 18:01:24,447 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:01:24,448 INFO L158 Benchmark]: Toolchain (without parser) took 181617.19ms. Allocated memory was 633.3MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 578.3MB in the beginning and 10.2GB in the end (delta: -9.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-08-03 18:01:24,448 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 310.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:01:24,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.34ms. Allocated memory is still 633.3MB. Free memory was 578.3MB in the beginning and 552.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 18:01:24,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.49ms. Allocated memory is still 633.3MB. Free memory was 552.3MB in the beginning and 549.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 18:01:24,449 INFO L158 Benchmark]: Boogie Preprocessor took 58.51ms. Allocated memory is still 633.3MB. Free memory was 549.4MB in the beginning and 546.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:01:24,449 INFO L158 Benchmark]: RCFGBuilder took 765.31ms. Allocated memory is still 633.3MB. Free memory was 546.9MB in the beginning and 565.6MB in the end (delta: -18.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.0GB. [2023-08-03 18:01:24,450 INFO L158 Benchmark]: TraceAbstraction took 180100.14ms. Allocated memory was 633.3MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 565.5MB in the beginning and 10.2GB in the end (delta: -9.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-08-03 18:01:24,451 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 310.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 611.34ms. Allocated memory is still 633.3MB. Free memory was 578.3MB in the beginning and 552.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 76.49ms. Allocated memory is still 633.3MB. Free memory was 552.3MB in the beginning and 549.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 58.51ms. Allocated memory is still 633.3MB. Free memory was 549.4MB in the beginning and 546.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 765.31ms. Allocated memory is still 633.3MB. Free memory was 546.9MB in the beginning and 565.6MB in the end (delta: -18.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.0GB. * TraceAbstraction took 180100.14ms. Allocated memory was 633.3MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 565.5MB in the beginning and 10.2GB in the end (delta: -9.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 130 PlacesBefore, 41 PlacesAfterwards, 128 TransitionsBefore, 35 TransitionsAfterwards, 2728 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 109 TotalNumberOfCompositions, 6841 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2725, independent: 2561, independent conditional: 0, independent unconditional: 2561, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1370, independent: 1339, independent conditional: 0, independent unconditional: 1339, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2725, independent: 1222, independent conditional: 0, independent unconditional: 1222, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 1370, unknown conditional: 0, unknown unconditional: 1370] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 161 PlacesBefore, 66 PlacesAfterwards, 153 TransitionsBefore, 54 TransitionsAfterwards, 6560 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 114 TotalNumberOfCompositions, 19291 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8539, independent: 8250, independent conditional: 0, independent unconditional: 8250, dependent: 289, dependent conditional: 0, dependent unconditional: 289, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3272, independent: 3209, independent conditional: 0, independent unconditional: 3209, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8539, independent: 5041, independent conditional: 0, independent unconditional: 5041, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 3272, unknown conditional: 0, unknown unconditional: 3272] , Statistics on independence cache: Total cache size (in pairs): 370, Positive cache size: 343, Positive conditional cache size: 0, Positive unconditional cache size: 343, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1873[2]; [L845] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1873={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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] [L845] COND TRUE 0 asdf<2 [L845] FCALL, FORK 0 pthread_create(&t1873[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1873[asdf], ((void *)0), P0, ((void *)0))=-2, t1873={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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] [L741] 1 y$w_buff1 = y$w_buff0 [L742] 1 y$w_buff0 = 2 [L743] 1 y$w_buff1_used = y$w_buff0_used [L744] 1 y$w_buff0_used = (_Bool)1 [L745] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L745] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L746] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L747] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L748] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L749] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L750] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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] [L845] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1873={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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] [L845] COND TRUE 0 asdf<2 [L845] FCALL, FORK 0 pthread_create(&t1873[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1873[asdf], ((void *)0), P0, ((void *)0))=-1, t1873={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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] [L741] 2 y$w_buff1 = y$w_buff0 [L742] 2 y$w_buff0 = 2 [L743] 2 y$w_buff1_used = y$w_buff0_used [L744] 2 y$w_buff0_used = (_Bool)1 [L745] 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, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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: 845]: 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: 847]: 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: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 1 mSDtfsCounter, 54 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=85occurred 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, 0.1s 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 10 procedures, 174 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 175.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 171.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 177 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=166occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 18:01:24,488 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...