/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:24:11,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:24:11,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:24:11,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:24:11,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:24:11,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:24:11,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:24:11,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:24:11,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:24:11,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:24:11,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:24:11,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:24:11,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:24:11,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:24:11,144 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:24:11,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:24:11,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:24:11,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:24:11,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:24:11,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:24:11,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:24:11,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:24:11,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:24:11,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:24:11,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:24:11,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:24:11,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:24:11,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:24:11,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:24:11,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:24:11,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:11,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:24:11,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:24:11,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:24:11,159 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:24:11,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:24:11,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:24:11,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:24:11,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:24:11,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:24:11,391 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:24:11,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-03 21:24:12,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:24:12,849 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:24:12,849 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-03 21:24:12,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb0ee9011/13f7871625aa40fab40ebdf3ebda69e6/FLAG7519aefe6 [2023-08-03 21:24:12,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb0ee9011/13f7871625aa40fab40ebdf3ebda69e6 [2023-08-03 21:24:12,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:24:12,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:24:12,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:12,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:24:12,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:24:12,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:12" (1/1) ... [2023-08-03 21:24:12,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0a8753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:12, skipping insertion in model container [2023-08-03 21:24:12,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:12" (1/1) ... [2023-08-03 21:24:12,944 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:24:13,246 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i[30212,30225] [2023-08-03 21:24:13,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:13,281 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:24:13,300 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 21:24:13,301 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 21:24:13,314 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i[30212,30225] [2023-08-03 21:24:13,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:13,354 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:24:13,360 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:24:13,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13 WrapperNode [2023-08-03 21:24:13,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:13,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:13,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:24:13,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:24:13,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,417 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2023-08-03 21:24:13,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:13,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:24:13,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:24:13,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:24:13,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:24:13,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:24:13,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:24:13,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:24:13,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (1/1) ... [2023-08-03 21:24:13,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:13,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:13,472 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 21:24:13,477 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 21:24:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:24:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:24:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:24:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:24:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:24:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:24:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:24:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:24:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:24:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:24:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:24:13,511 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 21:24:13,616 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:24:13,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:24:13,857 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:24:13,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:24:13,863 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 21:24:13,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:13 BoogieIcfgContainer [2023-08-03 21:24:13,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:24:13,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:24:13,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:24:13,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:24:13,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:24:12" (1/3) ... [2023-08-03 21:24:13,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e365e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:13, skipping insertion in model container [2023-08-03 21:24:13,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:13" (2/3) ... [2023-08-03 21:24:13,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e365e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:13, skipping insertion in model container [2023-08-03 21:24:13,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:13" (3/3) ... [2023-08-03 21:24:13,876 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-03 21:24:13,883 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:24:13,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:24:13,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:24:13,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:24:13,950 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:24:13,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 137 transitions, 282 flow [2023-08-03 21:24:14,071 INFO L124 PetriNetUnfolderBase]: 26/207 cut-off events. [2023-08-03 21:24:14,074 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:24:14,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 26/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 534 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:24:14,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 137 transitions, 282 flow [2023-08-03 21:24:14,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 132 transitions, 269 flow [2023-08-03 21:24:14,088 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:14,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-03 21:24:14,103 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-03 21:24:14,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 132 transitions, 269 flow [2023-08-03 21:24:14,149 INFO L124 PetriNetUnfolderBase]: 25/202 cut-off events. [2023-08-03 21:24:14,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:14,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 25/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 496 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 21:24:14,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-08-03 21:24:17,176 INFO L134 LiptonReduction]: Checked pairs total: 4319 [2023-08-03 21:24:17,177 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-03 21:24:17,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:17,194 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;@18d3596d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:17,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:17,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:17,199 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-03 21:24:17,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:17,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:17,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:24:17,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:17,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2020137906, now seen corresponding path program 1 times [2023-08-03 21:24:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343236908] [2023-08-03 21:24:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:17,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:24:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:17,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:24:17,351 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:24:17,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:24:17,353 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:17,355 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:24:17,356 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:24:17,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:24:17,372 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 21:24:17,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,411 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-03 21:24:17,411 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:17,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-03 21:24:17,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:17,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:17,443 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-03 21:24:17,444 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-03 21:24:17,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-08-03 21:24:20,503 INFO L134 LiptonReduction]: Checked pairs total: 11783 [2023-08-03 21:24:20,503 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-03 21:24:20,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:20,506 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;@18d3596d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:20,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:20,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:20,512 INFO L124 PetriNetUnfolderBase]: 21/70 cut-off events. [2023-08-03 21:24:20,512 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 21:24:20,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:20,512 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:24:20,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:20,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash -661544501, now seen corresponding path program 1 times [2023-08-03 21:24:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095342007] [2023-08-03 21:24:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:20,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095342007] [2023-08-03 21:24:20,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095342007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53974447] [2023-08-03 21:24:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:20,828 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) [2023-08-03 21:24:20,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:24:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:20,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:24:20,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:20,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:24:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53974447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:20,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:24:20,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:24:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533906287] [2023-08-03 21:24:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:20,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:24:20,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 297 [2023-08-03 21:24:20,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 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 21:24:20,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:20,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 297 [2023-08-03 21:24:20,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:21,243 INFO L124 PetriNetUnfolderBase]: 1281/2145 cut-off events. [2023-08-03 21:24:21,243 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-03 21:24:21,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 2145 events. 1281/2145 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11352 event pairs, 0 based on Foata normal form. 57/1814 useless extension candidates. Maximal degree in co-relation 734. Up to 1939 conditions per place. [2023-08-03 21:24:21,249 INFO L140 encePairwiseOnDemand]: 283/297 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-08-03 21:24:21,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 240 flow [2023-08-03 21:24:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:24:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:24:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-03 21:24:21,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2023-08-03 21:24:21,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-03 21:24:21,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-03 21:24:21,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:21,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-03 21:24:21,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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 21:24:21,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 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 21:24:21,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 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 21:24:21,288 INFO L175 Difference]: Start difference. First operand has 38 places, 47 transitions, 112 flow. Second operand 5 states and 737 transitions. [2023-08-03 21:24:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 240 flow [2023-08-03 21:24:21,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:24:21,298 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-03 21:24:21,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-03 21:24:21,308 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-08-03 21:24:21,308 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-03 21:24:21,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 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 21:24:21,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:21,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 21:24:21,515 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 [2023-08-03 21:24:21,515 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:21,516 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:24:21,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,542 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-03 21:24:21,542 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:21,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-03 21:24:21,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:21,546 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-03 21:24:21,567 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-03 21:24:21,567 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:21,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-03 21:24:21,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-08-03 21:24:24,530 INFO L134 LiptonReduction]: Checked pairs total: 13336 [2023-08-03 21:24:24,530 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-03 21:24:24,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:24:24,533 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;@18d3596d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:24,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:24:24,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:24,535 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-08-03 21:24:24,535 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:24:24,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:24,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 21:24:24,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:24,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1483401058, now seen corresponding path program 1 times [2023-08-03 21:24:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094066444] [2023-08-03 21:24:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:24,645 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 21:24:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094066444] [2023-08-03 21:24:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094066444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:24,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:24:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430740082] [2023-08-03 21:24:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:24,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:24:24,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:24:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:24:24,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-08-03 21:24:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 21:24:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-08-03 21:24:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:24,905 INFO L124 PetriNetUnfolderBase]: 1919/3175 cut-off events. [2023-08-03 21:24:24,906 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-03 21:24:24,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 3175 events. 1919/3175 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 15899 event pairs, 823 based on Foata normal form. 197/2720 useless extension candidates. Maximal degree in co-relation 2292. Up to 2046 conditions per place. [2023-08-03 21:24:24,917 INFO L140 encePairwiseOnDemand]: 278/294 looper letters, 46 selfloop transitions, 2 changer transitions 7/58 dead transitions. [2023-08-03 21:24:24,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 248 flow [2023-08-03 21:24:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:24:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:24:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-03 21:24:24,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5430839002267573 [2023-08-03 21:24:24,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-03 21:24:24,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-03 21:24:24,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:24,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-03 21:24:24,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 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 21:24:24,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 21:24:24,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 21:24:24,924 INFO L175 Difference]: Start difference. First operand has 39 places, 49 transitions, 116 flow. Second operand 3 states and 479 transitions. [2023-08-03 21:24:24,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 248 flow [2023-08-03 21:24:24,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:24:24,928 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 104 flow [2023-08-03 21:24:24,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-03 21:24:24,929 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 21:24:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 104 flow [2023-08-03 21:24:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 21:24:24,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:24,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:24,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:24:24,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:24,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -827418805, now seen corresponding path program 1 times [2023-08-03 21:24:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:24,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521411739] [2023-08-03 21:24:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521411739] [2023-08-03 21:24:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521411739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706881780] [2023-08-03 21:24:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:25,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:25,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:24:25,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:24:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:25,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:24:25,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:25,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:24:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706881780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:24:25,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:24:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:24:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346865339] [2023-08-03 21:24:25,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:24:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:24:25,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 294 [2023-08-03 21:24:25,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 21:24:25,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:25,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 294 [2023-08-03 21:24:25,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:25,454 INFO L124 PetriNetUnfolderBase]: 1809/3013 cut-off events. [2023-08-03 21:24:25,455 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-08-03 21:24:25,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 3013 events. 1809/3013 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14892 event pairs, 266 based on Foata normal form. 0/2590 useless extension candidates. Maximal degree in co-relation 2074. Up to 2694 conditions per place. [2023-08-03 21:24:25,467 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 49 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-08-03 21:24:25,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 246 flow [2023-08-03 21:24:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2023-08-03 21:24:25,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49829931972789115 [2023-08-03 21:24:25,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2023-08-03 21:24:25,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2023-08-03 21:24:25,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:25,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2023-08-03 21:24:25,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 21:24:25,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:25,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:25,475 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 104 flow. Second operand 4 states and 586 transitions. [2023-08-03 21:24:25,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 246 flow [2023-08-03 21:24:25,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:24:25,477 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 120 flow [2023-08-03 21:24:25,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-03 21:24:25,478 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-03 21:24:25,478 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 120 flow [2023-08-03 21:24:25,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 21:24:25,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:25,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:25,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 21:24:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 21:24:25,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:25,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1719546992, now seen corresponding path program 1 times [2023-08-03 21:24:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:25,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561083651] [2023-08-03 21:24:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:24:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561083651] [2023-08-03 21:24:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561083651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:25,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:24:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294067977] [2023-08-03 21:24:25,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:25,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:24:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:24:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:24:25,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 294 [2023-08-03 21:24:25,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 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 21:24:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 294 [2023-08-03 21:24:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:26,010 INFO L124 PetriNetUnfolderBase]: 342/759 cut-off events. [2023-08-03 21:24:26,010 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-08-03 21:24:26,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 759 events. 342/759 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3720 event pairs, 58 based on Foata normal form. 128/746 useless extension candidates. Maximal degree in co-relation 1003. Up to 584 conditions per place. [2023-08-03 21:24:26,012 INFO L140 encePairwiseOnDemand]: 287/294 looper letters, 40 selfloop transitions, 7 changer transitions 1/51 dead transitions. [2023-08-03 21:24:26,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 263 flow [2023-08-03 21:24:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-08-03 21:24:26,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2023-08-03 21:24:26,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-08-03 21:24:26,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-08-03 21:24:26,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:26,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-08-03 21:24:26,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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 21:24:26,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:26,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:26,019 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 120 flow. Second operand 4 states and 568 transitions. [2023-08-03 21:24:26,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 263 flow [2023-08-03 21:24:26,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:24:26,022 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 126 flow [2023-08-03 21:24:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-03 21:24:26,024 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-03 21:24:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 126 flow [2023-08-03 21:24:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 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 21:24:26,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:26,025 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:26,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 21:24:26,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:26,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1722273688, now seen corresponding path program 1 times [2023-08-03 21:24:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203550582] [2023-08-03 21:24:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:24:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203550582] [2023-08-03 21:24:26,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203550582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:26,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:24:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565892786] [2023-08-03 21:24:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:26,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:24:26,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:24:26,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:24:26,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-08-03 21:24:26,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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 21:24:26,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:26,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-08-03 21:24:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:26,298 INFO L124 PetriNetUnfolderBase]: 306/705 cut-off events. [2023-08-03 21:24:26,298 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-08-03 21:24:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 705 events. 306/705 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3085 event pairs, 262 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 948. Up to 650 conditions per place. [2023-08-03 21:24:26,299 INFO L140 encePairwiseOnDemand]: 289/294 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-03 21:24:26,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 184 flow [2023-08-03 21:24:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 573 transitions. [2023-08-03 21:24:26,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2023-08-03 21:24:26,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 573 transitions. [2023-08-03 21:24:26,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 573 transitions. [2023-08-03 21:24:26,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:26,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 573 transitions. [2023-08-03 21:24:26,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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 21:24:26,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:26,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 21:24:26,306 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 126 flow. Second operand 4 states and 573 transitions. [2023-08-03 21:24:26,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 184 flow [2023-08-03 21:24:26,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:24:26,309 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-03 21:24:26,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-03 21:24:26,310 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-03 21:24:26,310 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-03 21:24:26,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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 21:24:26,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:24:26,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:24:26,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:24:26,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:24:26,315 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 21:24:26,315 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:24:26,317 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:24:26,317 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:24:26,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:24:26 BasicIcfg [2023-08-03 21:24:26,321 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:24:26,322 INFO L158 Benchmark]: Toolchain (without parser) took 13434.08ms. Allocated memory was 562.0MB in the beginning and 675.3MB in the end (delta: 113.2MB). Free memory was 511.8MB in the beginning and 570.7MB in the end (delta: -58.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,322 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:24:26,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.96ms. Allocated memory is still 562.0MB. Free memory was 511.6MB in the beginning and 491.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.72ms. Allocated memory is still 562.0MB. Free memory was 491.2MB in the beginning and 488.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,323 INFO L158 Benchmark]: Boogie Preprocessor took 23.60ms. Allocated memory is still 562.0MB. Free memory was 488.8MB in the beginning and 487.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,323 INFO L158 Benchmark]: RCFGBuilder took 422.99ms. Allocated memory is still 562.0MB. Free memory was 487.0MB in the beginning and 523.6MB in the end (delta: -36.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,323 INFO L158 Benchmark]: TraceAbstraction took 12455.17ms. Allocated memory was 562.0MB in the beginning and 675.3MB in the end (delta: 113.2MB). Free memory was 522.9MB in the beginning and 570.7MB in the end (delta: -47.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.0GB. [2023-08-03 21:24:26,325 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 336.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 468.96ms. Allocated memory is still 562.0MB. Free memory was 511.6MB in the beginning and 491.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.72ms. Allocated memory is still 562.0MB. Free memory was 491.2MB in the beginning and 488.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.60ms. Allocated memory is still 562.0MB. Free memory was 488.8MB in the beginning and 487.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 422.99ms. Allocated memory is still 562.0MB. Free memory was 487.0MB in the beginning and 523.6MB in the end (delta: -36.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. * TraceAbstraction took 12455.17ms. Allocated memory was 562.0MB in the beginning and 675.3MB in the end (delta: 113.2MB). Free memory was 522.9MB in the beginning and 570.7MB in the end (delta: -47.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 121 PlacesBefore, 26 PlacesAfterwards, 132 TransitionsBefore, 34 TransitionsAfterwards, 3040 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 121 TotalNumberOfCompositions, 4319 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2812, independent: 2693, independent conditional: 0, independent unconditional: 2693, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1629, independent: 1597, independent conditional: 0, independent unconditional: 1597, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2812, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1629, unknown conditional: 0, unknown unconditional: 1629] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 145 PlacesBefore, 38 PlacesAfterwards, 159 TransitionsBefore, 47 TransitionsAfterwards, 7320 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 5 ChoiceCompositions, 138 TotalNumberOfCompositions, 11783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6958, independent: 6777, independent conditional: 0, independent unconditional: 6777, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3913, independent: 3868, independent conditional: 0, independent unconditional: 3868, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6958, independent: 2909, independent conditional: 0, independent unconditional: 2909, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 3913, unknown conditional: 0, unknown unconditional: 3913] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 154, Positive conditional cache size: 0, Positive unconditional cache size: 154, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 145 PlacesBefore, 39 PlacesAfterwards, 159 TransitionsBefore, 49 TransitionsAfterwards, 7320 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 135 TotalNumberOfCompositions, 13336 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7447, independent: 7228, independent conditional: 0, independent unconditional: 7228, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3872, independent: 3824, independent conditional: 0, independent unconditional: 3824, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7447, independent: 3404, independent conditional: 0, independent unconditional: 3404, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 3872, unknown conditional: 0, unknown unconditional: 3872] , Statistics on independence cache: Total cache size (in pairs): 187, Positive cache size: 167, Positive conditional cache size: 0, Positive unconditional cache size: 167, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 692]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 141 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 159 locations, 4 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: 4.1s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 1 thread instances CFG has 4 procedures, 159 locations, 4 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: 4.8s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 9 mSDtfsCounter, 401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 0.5s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:24:26,355 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...