/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026_power.opt_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:52:30,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:52:31,027 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:52:31,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:52:31,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:52:31,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:52:31,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:52:31,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:52:31,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:52:31,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:52:31,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:52:31,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:52:31,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:52:31,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:52:31,064 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:52:31,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:52:31,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:52:31,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:52:31,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:52:31,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:52:31,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:52:31,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:52:31,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:52:31,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:52:31,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:52:31,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:52:31,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:52:31,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:52:31,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:52:31,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:52:31,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:52:31,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:52:31,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:52:31,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:52:31,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:52:31,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:52:31,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:52:31,069 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:52:31,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:52:31,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:52:31,070 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:52:31,070 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:52:31,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:52:31,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:52:31,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:52:31,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:52:31,340 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:52:31,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026_power.opt_tso.opt_bound2.i [2023-08-04 05:52:32,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:52:32,779 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:52:32,780 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026_power.opt_tso.opt_bound2.i [2023-08-04 05:52:32,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc2fda2f/3bbafcd32d694641ae15a65a24fbcda9/FLAGf1d5a758a [2023-08-04 05:52:32,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc2fda2f/3bbafcd32d694641ae15a65a24fbcda9 [2023-08-04 05:52:32,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:52:32,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:52:32,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:52:32,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:52:32,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:52:32,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:52:32" (1/1) ... [2023-08-04 05:52:32,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b762fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:32, skipping insertion in model container [2023-08-04 05:52:32,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:52:32" (1/1) ... [2023-08-04 05:52:32,884 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:52:33,073 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026_power.opt_tso.opt_bound2.i[1001,1014] [2023-08-04 05:52:33,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:52:33,291 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:52:33,301 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix026_power.opt_tso.opt_bound2.i[1001,1014] [2023-08-04 05:52:33,309 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 05:52:33,311 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 05:52:33,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:52:33,391 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:52:33,392 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:52:33,398 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:52:33,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33 WrapperNode [2023-08-04 05:52:33,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:52:33,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:52:33,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:52:33,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:52:33,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,446 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:52:33,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:52:33,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:52:33,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:52:33,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:52:33,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:52:33,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:52:33,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:52:33,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:52:33,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (1/1) ... [2023-08-04 05:52:33,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:52:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:33,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 05:52:33,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 05:52:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:52:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:52:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:52:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:52:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:52:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:52:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:52:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:52:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:52:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:52:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:52:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:52:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:52:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:52:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:52:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:52:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:52:33,544 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:52:33,699 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:52:33,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:52:33,986 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:52:34,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:52:34,099 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:52:34,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:52:34 BoogieIcfgContainer [2023-08-04 05:52:34,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:52:34,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:52:34,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:52:34,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:52:34,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:52:32" (1/3) ... [2023-08-04 05:52:34,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:52:34, skipping insertion in model container [2023-08-04 05:52:34,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:52:33" (2/3) ... [2023-08-04 05:52:34,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca85c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:52:34, skipping insertion in model container [2023-08-04 05:52:34,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:52:34" (3/3) ... [2023-08-04 05:52:34,112 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix026_power.opt_tso.opt_bound2.i [2023-08-04 05:52:34,120 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:52:34,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:52:34,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:52:34,128 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:52:34,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:52:34,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:52:34,470 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:52:34,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:34,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5767 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:52:34,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:52:34,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 157 transitions, 332 flow [2023-08-04 05:52:34,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:34,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 157 transitions, 332 flow [2023-08-04 05:52:34,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 157 transitions, 332 flow [2023-08-04 05:52:34,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 332 flow [2023-08-04 05:52:34,616 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:52:34,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:34,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5760 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 552. Up to 32 conditions per place. [2023-08-04 05:52:34,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 4224 [2023-08-04 05:52:38,750 INFO L134 LiptonReduction]: Checked pairs total: 10009 [2023-08-04 05:52:38,751 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-04 05:52:38,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:52:38,768 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;@5d04d959, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:38,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:52:38,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:38,772 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-04 05:52:38,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:38,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:38,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:52:38,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:38,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash 626992526, now seen corresponding path program 1 times [2023-08-04 05:52:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:38,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416962512] [2023-08-04 05:52:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:38,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:39,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:39,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416962512] [2023-08-04 05:52:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416962512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:52:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:52:39,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687332958] [2023-08-04 05:52:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:39,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:52:39,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2023-08-04 05:52:39,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:39,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:39,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2023-08-04 05:52:39,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:41,107 INFO L124 PetriNetUnfolderBase]: 11097/16955 cut-off events. [2023-08-04 05:52:41,107 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-04 05:52:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32970 conditions, 16955 events. 11097/16955 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 110501 event pairs, 7728 based on Foata normal form. 0/14563 useless extension candidates. Maximal degree in co-relation 32956. Up to 15590 conditions per place. [2023-08-04 05:52:41,230 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 34 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:52:41,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 180 flow [2023-08-04 05:52:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:52:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:52:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 05:52:41,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2023-08-04 05:52:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 05:52:41,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 05:52:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:41,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 05:52:41,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,275 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 98 flow. Second operand 3 states and 446 transitions. [2023-08-04 05:52:41,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 180 flow [2023-08-04 05:52:41,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:52:41,281 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 106 flow [2023-08-04 05:52:41,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-04 05:52:41,286 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-04 05:52:41,287 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 106 flow [2023-08-04 05:52:41,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:41,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:52:41,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:52:41,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:52:41,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 570337987, now seen corresponding path program 1 times [2023-08-04 05:52:41,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:41,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865417394] [2023-08-04 05:52:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:41,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865417394] [2023-08-04 05:52:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865417394] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:52:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163109087] [2023-08-04 05:52:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:52:41,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:52:41,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:52:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:41,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:52:41,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:52:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:41,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:52:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163109087] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:52:41,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:52:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:52:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091104364] [2023-08-04 05:52:41,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:52:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:52:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:52:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:52:41,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 05:52:41,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:41,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 05:52:41,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:52:41,657 INFO L124 PetriNetUnfolderBase]: 6/20 cut-off events. [2023-08-04 05:52:41,658 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:52:41,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 20 events. 6/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 4/24 useless extension candidates. Maximal degree in co-relation 51. Up to 14 conditions per place. [2023-08-04 05:52:41,658 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 05:52:41,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 53 flow [2023-08-04 05:52:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:52:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:52:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-04 05:52:41,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-08-04 05:52:41,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-04 05:52:41,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-04 05:52:41,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:52:41,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-04 05:52:41,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,665 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,665 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 106 flow. Second operand 4 states and 552 transitions. [2023-08-04 05:52:41,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 53 flow [2023-08-04 05:52:41,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 05:52:41,666 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 05:52:41,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-04 05:52:41,667 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -33 predicate places. [2023-08-04 05:52:41,667 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 05:52:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:41,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:52:41,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:52:41,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:52:41,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:52:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:52:41,876 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 05:52:41,878 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:52:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:52:41,955 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:52:41,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:41,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5767 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:52:41,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:52:41,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 05:52:41,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:41,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:52:41,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:52:41,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 05:52:41,989 INFO L124 PetriNetUnfolderBase]: 14/437 cut-off events. [2023-08-04 05:52:41,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:41,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 437 events. 14/437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1996 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-08-04 05:52:41,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 2438 [2023-08-04 05:52:45,240 INFO L134 LiptonReduction]: Checked pairs total: 6269 [2023-08-04 05:52:45,240 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:52:45,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:52:45,243 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;@5d04d959, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:45,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:52:45,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:45,247 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 05:52:45,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:45,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:52:45,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:52:45,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 854697102, now seen corresponding path program 1 times [2023-08-04 05:52:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573727643] [2023-08-04 05:52:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:52:45,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:52:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:52:45,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:52:45,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:52:45,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:52:45,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:52:45,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:52:45,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:52:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 05:52:45,314 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:52:45,315 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:52:45,315 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:52:45,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:52:45,352 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:52:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:52:45,939 INFO L124 PetriNetUnfolderBase]: 282/4327 cut-off events. [2023-08-04 05:52:45,939 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:52:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 4327 events. 282/4327 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42020 event pairs, 0 based on Foata normal form. 0/3838 useless extension candidates. Maximal degree in co-relation 3122. Up to 162 conditions per place. [2023-08-04 05:52:45,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:52:45,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 190 transitions, 424 flow [2023-08-04 05:52:45,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:52:45,968 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 190 transitions, 424 flow [2023-08-04 05:52:45,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 190 transitions, 424 flow [2023-08-04 05:52:45,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 424 flow [2023-08-04 05:52:46,390 INFO L124 PetriNetUnfolderBase]: 282/4326 cut-off events. [2023-08-04 05:52:46,390 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 05:52:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 4326 events. 282/4326 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42015 event pairs, 0 based on Foata normal form. 0/3837 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-04 05:52:46,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 10352 [2023-08-04 05:52:50,147 INFO L134 LiptonReduction]: Checked pairs total: 31184 [2023-08-04 05:52:50,148 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 05:52:50,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:52:50,150 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;@5d04d959, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:52:50,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:52:50,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:52:50,153 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-04 05:52:50,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:52:50,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:52:50,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:52:50,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:52:50,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:52:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1067021022, now seen corresponding path program 1 times [2023-08-04 05:52:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:52:50,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140327426] [2023-08-04 05:52:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:52:50,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:52:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:52:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:52:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:52:50,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140327426] [2023-08-04 05:52:50,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140327426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:52:50,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:52:50,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:52:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525655347] [2023-08-04 05:52:50,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:52:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:52:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:52:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:52:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:52:50,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 330 [2023-08-04 05:52:50,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:52:50,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:52:50,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 330 [2023-08-04 05:52:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand