/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt2.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:33:12,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:33:13,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:33:13,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:33:13,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:33:13,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:33:13,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:33:13,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:33:13,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:33:13,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:33:13,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:33:13,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:33:13,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:33:13,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:33:13,054 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:33:13,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:33:13,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:33:13,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:33:13,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:33:13,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:33:13,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:33:13,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:33:13,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:33:13,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:33:13,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:33:13,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:33:13,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:33:13,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:33:13,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:33:13,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:33:13,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:33:13,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:33:13,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:33:13,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:33:13,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:33:13,061 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:33:13,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:33:13,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:33:13,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:33:13,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:33:13,325 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:33:13,325 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:33:13,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt2.wvr_bound2.c [2023-08-03 20:33:14,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:33:15,012 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:33:15,013 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt2.wvr_bound2.c [2023-08-03 20:33:15,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cf410fae/ca3b575c0629464098c22268321db144/FLAGc85672712 [2023-08-03 20:33:15,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cf410fae/ca3b575c0629464098c22268321db144 [2023-08-03 20:33:15,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:33:15,046 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:33:15,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:33:15,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:33:15,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:33:15,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15, skipping insertion in model container [2023-08-03 20:33:15,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,080 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:33:15,251 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt2.wvr_bound2.c[2768,2781] [2023-08-03 20:33:15,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:33:15,264 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:33:15,284 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum-alt2.wvr_bound2.c[2768,2781] [2023-08-03 20:33:15,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:33:15,295 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:33:15,295 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:33:15,300 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:33:15,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15 WrapperNode [2023-08-03 20:33:15,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:33:15,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:33:15,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:33:15,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:33:15,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,337 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 242 [2023-08-03 20:33:15,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:33:15,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:33:15,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:33:15,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:33:15,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:33:15,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:33:15,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:33:15,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:33:15,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (1/1) ... [2023-08-03 20:33:15,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:33:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:33:15,406 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 20:33:15,426 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 20:33:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:33:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:33:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:33:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:33:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:33:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:33:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:33:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:33:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:33:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:33:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:33:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:33:15,445 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 20:33:15,562 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:33:15,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:33:15,955 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:33:16,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:33:16,107 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 20:33:16,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:33:16 BoogieIcfgContainer [2023-08-03 20:33:16,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:33:16,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:33:16,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:33:16,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:33:16,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:33:15" (1/3) ... [2023-08-03 20:33:16,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1664f554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:33:16, skipping insertion in model container [2023-08-03 20:33:16,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:33:15" (2/3) ... [2023-08-03 20:33:16,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1664f554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:33:16, skipping insertion in model container [2023-08-03 20:33:16,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:33:16" (3/3) ... [2023-08-03 20:33:16,116 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-array-sum-alt2.wvr_bound2.c [2023-08-03 20:33:16,127 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:33:16,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:33:16,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:33:16,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:33:16,201 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:33:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,374 INFO L124 PetriNetUnfolderBase]: 101/660 cut-off events. [2023-08-03 20:33:16,375 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:33:16,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 660 events. 101/660 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3225 event pairs, 0 based on Foata normal form. 0/549 useless extension candidates. Maximal degree in co-relation 373. Up to 16 conditions per place. [2023-08-03 20:33:16,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:33:16,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 192 transitions, 426 flow [2023-08-03 20:33:16,483 INFO L124 PetriNetUnfolderBase]: 101/660 cut-off events. [2023-08-03 20:33:16,483 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:33:16,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 660 events. 101/660 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3225 event pairs, 0 based on Foata normal form. 0/549 useless extension candidates. Maximal degree in co-relation 373. Up to 16 conditions per place. [2023-08-03 20:33:16,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 5220 [2023-08-03 20:33:21,396 INFO L134 LiptonReduction]: Checked pairs total: 8556 [2023-08-03 20:33:21,397 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-03 20:33:21,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:33:21,414 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;@4e95e6c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:33:21,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:33:21,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:33:21,426 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-08-03 20:33:21,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:33:21,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:33:21,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 20:33:21,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:33:21,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:33:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash 187120231, now seen corresponding path program 1 times [2023-08-03 20:33:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:33:21,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665880557] [2023-08-03 20:33:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:21,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:33:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:33:21,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:33:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:33:21,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:33:21,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:33:21,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:33:21,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:33:21,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:33:21,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:33:21,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:33:21,691 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:33:21,694 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:33:21,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:33:21,744 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:33:21,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,323 INFO L124 PetriNetUnfolderBase]: 891/4149 cut-off events. [2023-08-03 20:33:22,324 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:33:22,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 4149 events. 891/4149 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33208 event pairs, 22 based on Foata normal form. 0/3502 useless extension candidates. Maximal degree in co-relation 2466. Up to 192 conditions per place. [2023-08-03 20:33:22,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:33:22,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 234 transitions, 558 flow [2023-08-03 20:33:22,882 INFO L124 PetriNetUnfolderBase]: 891/4149 cut-off events. [2023-08-03 20:33:22,882 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:33:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 4149 events. 891/4149 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33208 event pairs, 22 based on Foata normal form. 0/3502 useless extension candidates. Maximal degree in co-relation 2466. Up to 192 conditions per place. [2023-08-03 20:33:22,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 13500 [2023-08-03 20:33:28,761 INFO L134 LiptonReduction]: Checked pairs total: 27130 [2023-08-03 20:33:28,762 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-03 20:33:28,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:33:28,764 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;@4e95e6c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:33:28,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:33:28,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:33:28,768 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2023-08-03 20:33:28,768 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:33:28,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:33:28,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:33:28,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:33:28,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:33:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash -189780591, now seen corresponding path program 1 times [2023-08-03 20:33:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:33:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326828667] [2023-08-03 20:33:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:33:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:33:28,932 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 20:33:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:33:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326828667] [2023-08-03 20:33:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326828667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:33:28,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:33:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:33:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142933027] [2023-08-03 20:33:28,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:33:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:33:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:33:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:33:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:33:28,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425 [2023-08-03 20:33:28,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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 20:33:28,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:33:28,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425 [2023-08-03 20:33:28,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:33:53,037 INFO L124 PetriNetUnfolderBase]: 282623/337117 cut-off events. [2023-08-03 20:33:53,037 INFO L125 PetriNetUnfolderBase]: For 35684/35684 co-relation queries the response was YES. [2023-08-03 20:33:53,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685471 conditions, 337117 events. 282623/337117 cut-off events. For 35684/35684 co-relation queries the response was YES. Maximal size of possible extension queue 6409. Compared 1586362 event pairs, 121251 based on Foata normal form. 0/188827 useless extension candidates. Maximal degree in co-relation 224713. Up to 327469 conditions per place. [2023-08-03 20:33:55,324 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 59 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 20:33:55,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 364 flow [2023-08-03 20:33:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:33:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:33:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-03 20:33:55,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776470588235294 [2023-08-03 20:33:55,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-03 20:33:55,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-03 20:33:55,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:33:55,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-03 20:33:55,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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 20:33:55,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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 20:33:55,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 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 20:33:55,356 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 236 flow. Second operand 3 states and 609 transitions. [2023-08-03 20:33:55,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 364 flow [2023-08-03 20:33:55,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:33:55,417 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 246 flow [2023-08-03 20:33:55,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-03 20:33:55,422 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-08-03 20:33:55,424 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 246 flow [2023-08-03 20:33:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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 20:33:55,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:33:55,430 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 20:33:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:33:55,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:33:55,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:33:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1217987521, now seen corresponding path program 1 times [2023-08-03 20:33:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:33:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819603725] [2023-08-03 20:33:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:33:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:33:55,527 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 20:33:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:33:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819603725] [2023-08-03 20:33:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819603725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:33:55,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508324444] [2023-08-03 20:33:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:33:55,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:33:55,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:33:55,531 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 20:33:55,537 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 20:33:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:33:55,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:33:55,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:33:55,690 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 20:33:55,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:33:55,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508324444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:33:55,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:33:55,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:33:55,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529231399] [2023-08-03 20:33:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:33:55,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:33:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:33:55,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:33:55,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:33:55,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 425 [2023-08-03 20:33:55,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 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 20:33:55,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:33:55,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 425 [2023-08-03 20:33:55,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:34:19,194 INFO L124 PetriNetUnfolderBase]: 282509/337009 cut-off events. [2023-08-03 20:34:19,194 INFO L125 PetriNetUnfolderBase]: For 35624/35624 co-relation queries the response was YES. [2023-08-03 20:34:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685241 conditions, 337009 events. 282509/337009 cut-off events. For 35624/35624 co-relation queries the response was YES. Maximal size of possible extension queue 6290. Compared 1585865 event pairs, 98664 based on Foata normal form. 9/188798 useless extension candidates. Maximal degree in co-relation 392073. Up to 327295 conditions per place. [2023-08-03 20:34:21,216 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 62 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-03 20:34:21,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 390 flow [2023-08-03 20:34:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:34:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:34:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 972 transitions. [2023-08-03 20:34:21,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45741176470588235 [2023-08-03 20:34:21,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 972 transitions. [2023-08-03 20:34:21,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 972 transitions. [2023-08-03 20:34:21,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:34:21,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 972 transitions. [2023-08-03 20:34:21,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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 20:34:21,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 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 20:34:21,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 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 20:34:21,229 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 246 flow. Second operand 5 states and 972 transitions. [2023-08-03 20:34:21,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 390 flow [2023-08-03 20:34:21,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:34:21,261 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 251 flow [2023-08-03 20:34:21,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-08-03 20:34:21,262 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-08-03 20:34:21,262 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 251 flow [2023-08-03 20:34:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 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 20:34:21,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:34:21,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:34:21,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 20:34:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:34:21,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:34:21,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:34:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash -664389593, now seen corresponding path program 1 times [2023-08-03 20:34:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:34:21,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269855918] [2023-08-03 20:34:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:34:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:34:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:34:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:34:21,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:34:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269855918] [2023-08-03 20:34:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269855918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:34:21,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:34:21,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:34:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219855749] [2023-08-03 20:34:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:34:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:34:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:34:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:34:21,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:34:21,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425 [2023-08-03 20:34:21,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 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 20:34:21,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:34:21,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425 [2023-08-03 20:34:21,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand