/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix018_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:45:05,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:45:05,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:45:05,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:45:05,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:45:05,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:45:05,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:45:05,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:45:05,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:45:05,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:45:05,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:45:05,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:45:05,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:45:05,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:45:05,383 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:45:05,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:45:05,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:45:05,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:45:05,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:45:05,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:45:05,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:45:05,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:45:05,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:45:05,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:45:05,386 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:45:05,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:45:05,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:45:05,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:45:05,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:45:05,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:45:05,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:45:05,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:45:05,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:45:05,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:45:05,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:45:05,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:45:05,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:45:05,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:45:05,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:45:05,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:45:05,390 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:45:05,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:45:05,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:45:05,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:45:05,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:45:05,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:45:05,614 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:45:05,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix018_tso.oepc_bound2.i [2023-08-04 05:45:06,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:45:06,851 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:45:06,851 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix018_tso.oepc_bound2.i [2023-08-04 05:45:06,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338bce1b3/9d5e4868a4174f3abd1ff0396d20ea79/FLAGe3b299531 [2023-08-04 05:45:06,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338bce1b3/9d5e4868a4174f3abd1ff0396d20ea79 [2023-08-04 05:45:06,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:45:06,884 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:45:06,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:45:06,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:45:06,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:45:06,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:45:06" (1/1) ... [2023-08-04 05:45:06,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1979f227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:06, skipping insertion in model container [2023-08-04 05:45:06,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:45:06" (1/1) ... [2023-08-04 05:45:06,932 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:45:07,065 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_mix018_tso.oepc_bound2.i[949,962] [2023-08-04 05:45:07,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:45:07,247 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:45:07,257 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_mix018_tso.oepc_bound2.i[949,962] [2023-08-04 05:45:07,269 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:45:07,270 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:45:07,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:45:07,327 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:45:07,327 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:45:07,331 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:45:07,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07 WrapperNode [2023-08-04 05:45:07,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:45:07,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:45:07,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:45:07,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:45:07,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,365 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-08-04 05:45:07,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:45:07,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:45:07,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:45:07,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:45:07,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:45:07,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:45:07,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:45:07,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:45:07,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (1/1) ... [2023-08-04 05:45:07,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:45:07,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:45:07,424 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) [2023-08-04 05:45:07,432 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 [2023-08-04 05:45:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:45:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:45:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:45:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:45:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:45:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:45:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:45:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:45:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:45:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:45:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:45:07,457 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:45:07,559 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:45:07,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:45:07,862 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:45:07,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:45:07,942 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:45:07,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:45:07 BoogieIcfgContainer [2023-08-04 05:45:07,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:45:07,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:45:07,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:45:07,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:45:07,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:45:06" (1/3) ... [2023-08-04 05:45:07,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392dcd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:45:07, skipping insertion in model container [2023-08-04 05:45:07,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:45:07" (2/3) ... [2023-08-04 05:45:07,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392dcd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:45:07, skipping insertion in model container [2023-08-04 05:45:07,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:45:07" (3/3) ... [2023-08-04 05:45:07,951 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix018_tso.oepc_bound2.i [2023-08-04 05:45:07,956 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:45:07,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:45:07,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:45:07,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:45:08,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:45:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:45:08,222 INFO L124 PetriNetUnfolderBase]: 62/934 cut-off events. [2023-08-04 05:45:08,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:08,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 934 events. 62/934 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5797 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 05:45:08,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:45:08,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 158 transitions, 334 flow [2023-08-04 05:45:08,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:45:08,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 158 transitions, 334 flow [2023-08-04 05:45:08,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 158 transitions, 334 flow [2023-08-04 05:45:08,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 334 flow [2023-08-04 05:45:08,388 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:45:08,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:08,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5775 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:45:08,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 4440 [2023-08-04 05:45:11,793 INFO L134 LiptonReduction]: Checked pairs total: 11203 [2023-08-04 05:45:11,793 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-04 05:45:11,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:45:11,806 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;@7e295002, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:45:11,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:45:11,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:45:11,809 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-04 05:45:11,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:11,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:45:11,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:45:11,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:45:11,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:45:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 637545508, now seen corresponding path program 1 times [2023-08-04 05:45:11,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:45:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458638175] [2023-08-04 05:45:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:45:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:45:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:45:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:45:12,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:45:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458638175] [2023-08-04 05:45:12,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458638175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:45:12,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:45:12,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:45:12,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968223322] [2023-08-04 05:45:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:45:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:45:12,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:45:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:45:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:45:12,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2023-08-04 05:45:12,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:45:12,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:45:12,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2023-08-04 05:45:12,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:45:13,712 INFO L124 PetriNetUnfolderBase]: 14237/20516 cut-off events. [2023-08-04 05:45:13,712 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-08-04 05:45:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41031 conditions, 20516 events. 14237/20516 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 130817 event pairs, 12812 based on Foata normal form. 600/17780 useless extension candidates. Maximal degree in co-relation 41017. Up to 19930 conditions per place. [2023-08-04 05:45:13,817 INFO L140 encePairwiseOnDemand]: 284/288 looper letters, 36 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:45:13,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 190 flow [2023-08-04 05:45:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:45:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:45:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-04 05:45:13,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196759259259259 [2023-08-04 05:45:13,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-04 05:45:13,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-04 05:45:13,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:45:13,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-04 05:45:13,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-08-04 05:45:13,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-04 05:45:13,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-04 05:45:13,846 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 106 flow. Second operand 3 states and 449 transitions. [2023-08-04 05:45:13,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 190 flow [2023-08-04 05:45:13,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:45:13,851 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 112 flow [2023-08-04 05:45:13,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 05:45:13,856 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-04 05:45:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 112 flow [2023-08-04 05:45:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:45:13,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:45:13,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:45:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:45:13,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:45:13,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:45:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash 132713842, now seen corresponding path program 1 times [2023-08-04 05:45:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:45:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030031090] [2023-08-04 05:45:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:45:13,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:45:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:45:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:45:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:45:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030031090] [2023-08-04 05:45:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030031090] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:45:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583565531] [2023-08-04 05:45:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:45:13,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:45:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:45:13,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:45:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:45:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:45:14,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:45:14,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:45:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:45:14,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:45:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:45:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583565531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:45:14,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:45:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:45:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106705786] [2023-08-04 05:45:14,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:45:14,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:45:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:45:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:45:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:45:14,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 05:45:14,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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) [2023-08-04 05:45:14,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:45:14,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 05:45:14,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:45:14,131 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:45:14,131 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:45:14,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 21 events. 6/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 05:45:14,131 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:45:14,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-04 05:45:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:45:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:45:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-04 05:45:14,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-08-04 05:45:14,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-04 05:45:14,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-04 05:45:14,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:45:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-04 05:45:14,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2023-08-04 05:45:14,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-04 05:45:14,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-04 05:45:14,138 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 112 flow. Second operand 4 states and 552 transitions. [2023-08-04 05:45:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-04 05:45:14,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 05:45:14,139 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 05:45:14,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 05:45:14,139 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -35 predicate places. [2023-08-04 05:45:14,140 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 05:45:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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) [2023-08-04 05:45:14,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:45:14,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:45:14,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:45:14,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:45:14,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:45:14,348 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 05:45:14,350 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:45:14,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:45:14,426 INFO L124 PetriNetUnfolderBase]: 62/934 cut-off events. [2023-08-04 05:45:14,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 934 events. 62/934 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5797 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 05:45:14,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:45:14,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 128 transitions, 276 flow [2023-08-04 05:45:14,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:45:14,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:45:14,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:45:14,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 128 transitions, 276 flow [2023-08-04 05:45:14,452 INFO L124 PetriNetUnfolderBase]: 14/438 cut-off events. [2023-08-04 05:45:14,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:14,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 438 events. 14/438 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2014 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-04 05:45:14,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 2594 [2023-08-04 05:45:17,062 INFO L134 LiptonReduction]: Checked pairs total: 6393 [2023-08-04 05:45:17,062 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 05:45:17,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:45:17,064 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;@7e295002, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:45:17,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:45:17,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:45:17,067 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:45:17,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:17,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:45:17,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:45:17,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:45:17,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:45:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1213460054, now seen corresponding path program 1 times [2023-08-04 05:45:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:45:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533920172] [2023-08-04 05:45:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:45:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:45:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:45:17,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:45:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:45:17,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:45:17,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:45:17,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:45:17,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:45:17,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:45:17,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:45:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 05:45:17,113 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:45:17,113 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:45:17,114 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:45:17,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:45:17,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:45:17,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:45:17,640 INFO L124 PetriNetUnfolderBase]: 282/4329 cut-off events. [2023-08-04 05:45:17,641 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:45:17,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 4329 events. 282/4329 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42066 event pairs, 0 based on Foata normal form. 0/3840 useless extension candidates. Maximal degree in co-relation 3124. Up to 162 conditions per place. [2023-08-04 05:45:17,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:45:17,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 428 flow [2023-08-04 05:45:17,666 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:45:17,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 428 flow [2023-08-04 05:45:17,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 428 flow [2023-08-04 05:45:17,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 428 flow [2023-08-04 05:45:18,116 INFO L124 PetriNetUnfolderBase]: 282/4328 cut-off events. [2023-08-04 05:45:18,116 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 05:45:18,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 4328 events. 282/4328 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42061 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3121. Up to 162 conditions per place. [2023-08-04 05:45:18,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 10916 [2023-08-04 05:45:21,553 INFO L134 LiptonReduction]: Checked pairs total: 33671 [2023-08-04 05:45:21,554 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-04 05:45:21,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:45:21,556 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;@7e295002, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:45:21,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:45:21,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:45:21,559 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-08-04 05:45:21,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:45:21,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:45:21,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:45:21,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:45:21,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:45:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1080437769, now seen corresponding path program 1 times [2023-08-04 05:45:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:45:21,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862990236] [2023-08-04 05:45:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:45:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:45:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:45:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:45:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:45:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862990236] [2023-08-04 05:45:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862990236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:45:21,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:45:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:45:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292711654] [2023-08-04 05:45:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:45:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:45:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:45:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:45:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:45:21,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2023-08-04 05:45:21,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-08-04 05:45:21,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:45:21,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2023-08-04 05:45:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand