/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_mix051_pso.opt_rmo.opt_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:14:38,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:14:38,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:14:38,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:14:38,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:14:38,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:14:38,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:14:38,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:14:38,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:14:38,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:14:38,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:14:38,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:14:38,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:14:38,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:14:38,427 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:14:38,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:14:38,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:14:38,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:14:38,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:14:38,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:14:38,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:14:38,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:14:38,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:14:38,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:14:38,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:14:38,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:14:38,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:14:38,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:14:38,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:14:38,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:14:38,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:14:38,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:14:38,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:14:38,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:14:38,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:14:38,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:14:38,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:14:38,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:14:38,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:14:38,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:14:38,434 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:14:38,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:14:38,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:14:38,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:14:38,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:14:38,693 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:14:38,693 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:14:38,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix051_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:14:40,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:14:40,561 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:14:40,561 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix051_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:14:40,581 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6347b3c78/4b097f6c1b25446d9ff2d7c1448cab0b/FLAG40caa696c [2023-08-04 06:14:40,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6347b3c78/4b097f6c1b25446d9ff2d7c1448cab0b [2023-08-04 06:14:40,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:14:40,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:14:40,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:14:40,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:14:40,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:14:40,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:14:40" (1/1) ... [2023-08-04 06:14:40,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e317b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:40, skipping insertion in model container [2023-08-04 06:14:40,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:14:40" (1/1) ... [2023-08-04 06:14:40,657 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:14:40,792 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_mix051_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-04 06:14:41,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:14:41,033 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:14:41,046 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_mix051_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-04 06:14:41,063 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:14:41,070 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:14:41,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:14:41,147 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:14:41,148 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:14:41,154 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:14:41,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41 WrapperNode [2023-08-04 06:14:41,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:14:41,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:14:41,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:14:41,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:14:41,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,221 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 06:14:41,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:14:41,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:14:41,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:14:41,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:14:41,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:14:41,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:14:41,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:14:41,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:14:41,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (1/1) ... [2023-08-04 06:14:41,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:14:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:14:41,330 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 06:14:41,355 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 06:14:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:14:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:14:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:14:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:14:41,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:14:41,370 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:14:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:14:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:14:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:14:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:14:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:14:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:14:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:14:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:14:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:14:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:14:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:14:41,373 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 06:14:41,538 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:14:41,539 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:14:41,782 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:14:41,890 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:14:41,891 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:14:41,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:14:41 BoogieIcfgContainer [2023-08-04 06:14:41,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:14:41,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:14:41,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:14:41,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:14:41,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:14:40" (1/3) ... [2023-08-04 06:14:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eda618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:14:41, skipping insertion in model container [2023-08-04 06:14:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:14:41" (2/3) ... [2023-08-04 06:14:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eda618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:14:41, skipping insertion in model container [2023-08-04 06:14:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:14:41" (3/3) ... [2023-08-04 06:14:41,902 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix051_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:14:41,909 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:14:41,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:14:41,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:14:41,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:14:41,990 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:14:42,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:14:42,292 INFO L124 PetriNetUnfolderBase]: 62/924 cut-off events. [2023-08-04 06:14:42,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:42,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 924 events. 62/924 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5699 event pairs, 0 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-08-04 06:14:42,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:14:42,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 151 transitions, 316 flow [2023-08-04 06:14:42,316 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:14:42,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 151 transitions, 316 flow [2023-08-04 06:14:42,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 151 transitions, 316 flow [2023-08-04 06:14:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 151 transitions, 316 flow [2023-08-04 06:14:42,448 INFO L124 PetriNetUnfolderBase]: 62/917 cut-off events. [2023-08-04 06:14:42,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 917 events. 62/917 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5635 event pairs, 0 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 531. Up to 32 conditions per place. [2023-08-04 06:14:42,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 3644 [2023-08-04 06:14:46,186 INFO L134 LiptonReduction]: Checked pairs total: 7910 [2023-08-04 06:14:46,186 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-04 06:14:46,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:14:46,207 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;@2c0cbed2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:14:46,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:14:46,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:14:46,215 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2023-08-04 06:14:46,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:46,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:46,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:14:46,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:14:46,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 522536493, now seen corresponding path program 1 times [2023-08-04 06:14:46,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:46,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440008144] [2023-08-04 06:14:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:46,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:46,532 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 06:14:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:14:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440008144] [2023-08-04 06:14:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440008144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:14:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:14:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:14:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136419213] [2023-08-04 06:14:46,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:14:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:14:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:14:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:14:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:14:46,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 282 [2023-08-04 06:14:46,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 06:14:46,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:14:46,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 282 [2023-08-04 06:14:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:14:47,821 INFO L124 PetriNetUnfolderBase]: 7844/11639 cut-off events. [2023-08-04 06:14:47,822 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 06:14:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23081 conditions, 11639 events. 7844/11639 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 71240 event pairs, 5586 based on Foata normal form. 360/10112 useless extension candidates. Maximal degree in co-relation 23067. Up to 11232 conditions per place. [2023-08-04 06:14:47,887 INFO L140 encePairwiseOnDemand]: 278/282 looper letters, 33 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 06:14:47,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 166 flow [2023-08-04 06:14:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:14:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:14:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 06:14:47,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2023-08-04 06:14:47,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 06:14:47,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 06:14:47,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:14:47,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 06:14:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 06:14:47,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:47,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:47,927 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 90 flow. Second operand 3 states and 440 transitions. [2023-08-04 06:14:47,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 166 flow [2023-08-04 06:14:47,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:14:47,933 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 96 flow [2023-08-04 06:14:47,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 06:14:47,938 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-04 06:14:47,939 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 96 flow [2023-08-04 06:14:47,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 06:14:47,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:47,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:14:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:14:47,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:14:47,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1908075655, now seen corresponding path program 1 times [2023-08-04 06:14:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037043099] [2023-08-04 06:14:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:48,050 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 06:14:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:14:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037043099] [2023-08-04 06:14:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037043099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:14:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434328065] [2023-08-04 06:14:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:14:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:14:48,054 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 06:14:48,079 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 06:14:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:48,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:14:48,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:14:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:14:48,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:14:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434328065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:14:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:14:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:14:48,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891178121] [2023-08-04 06:14:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:14:48,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:14:48,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:14:48,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:14:48,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:14:48,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 282 [2023-08-04 06:14:48,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:14:48,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:14:48,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 282 [2023-08-04 06:14:48,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:14:49,120 INFO L124 PetriNetUnfolderBase]: 6311/9160 cut-off events. [2023-08-04 06:14:49,122 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 06:14:49,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18196 conditions, 9160 events. 6311/9160 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 52631 event pairs, 5455 based on Foata normal form. 0/7756 useless extension candidates. Maximal degree in co-relation 18179. Up to 8842 conditions per place. [2023-08-04 06:14:49,176 INFO L140 encePairwiseOnDemand]: 279/282 looper letters, 35 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 06:14:49,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 182 flow [2023-08-04 06:14:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:14:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:14:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-04 06:14:49,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-08-04 06:14:49,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-04 06:14:49,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-04 06:14:49,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:14:49,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-04 06:14:49,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 06:14:49,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:49,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:49,186 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 96 flow. Second operand 3 states and 441 transitions. [2023-08-04 06:14:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 182 flow [2023-08-04 06:14:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:14:49,188 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 100 flow [2023-08-04 06:14:49,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 06:14:49,189 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-04 06:14:49,190 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 100 flow [2023-08-04 06:14:49,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:14:49,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:49,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:14:49,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 06:14:49,395 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 06:14:49,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:14:49,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -665885242, now seen corresponding path program 1 times [2023-08-04 06:14:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201329949] [2023-08-04 06:14:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:14:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:14:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201329949] [2023-08-04 06:14:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201329949] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:14:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413274632] [2023-08-04 06:14:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:49,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:14:49,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:14:49,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:14:49,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:14:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:49,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:14:49,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:14:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:14:49,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:14:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413274632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:14:49,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:14:49,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:14:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213308038] [2023-08-04 06:14:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:14:49,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:14:49,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:14:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:14:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:14:49,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 282 [2023-08-04 06:14:49,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 06:14:49,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:14:49,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 282 [2023-08-04 06:14:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:14:50,306 INFO L124 PetriNetUnfolderBase]: 5387/7765 cut-off events. [2023-08-04 06:14:50,306 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 06:14:50,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15409 conditions, 7765 events. 5387/7765 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 42912 event pairs, 3830 based on Foata normal form. 0/6684 useless extension candidates. Maximal degree in co-relation 15392. Up to 7340 conditions per place. [2023-08-04 06:14:50,346 INFO L140 encePairwiseOnDemand]: 279/282 looper letters, 38 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 06:14:50,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 198 flow [2023-08-04 06:14:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:14:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:14:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-04 06:14:50,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2023-08-04 06:14:50,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-04 06:14:50,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-04 06:14:50,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:14:50,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-04 06:14:50,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 06:14:50,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:50,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 06:14:50,352 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 100 flow. Second operand 3 states and 444 transitions. [2023-08-04 06:14:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 198 flow [2023-08-04 06:14:50,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:14:50,354 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 104 flow [2023-08-04 06:14:50,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 06:14:50,355 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-04 06:14:50,355 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 104 flow [2023-08-04 06:14:50,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 06:14:50,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:50,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:14:50,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:14:50,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 06:14:50,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:14:50,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash 404967406, now seen corresponding path program 1 times [2023-08-04 06:14:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:50,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615084321] [2023-08-04 06:14:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:14:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:14:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615084321] [2023-08-04 06:14:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615084321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:14:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045108887] [2023-08-04 06:14:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:50,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:14:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:14:50,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:14:50,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:14:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:50,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:14:50,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:14:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:14:50,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:14:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:14:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045108887] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:14:50,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:14:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:14:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738381945] [2023-08-04 06:14:50,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:14:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:14:50,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:14:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:14:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:14:50,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 282 [2023-08-04 06:14:50,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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 06:14:50,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:14:50,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 282 [2023-08-04 06:14:50,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:14:50,842 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:14:50,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:50,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:14:50,843 INFO L140 encePairwiseOnDemand]: 279/282 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:14:50,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:14:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:14:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:14:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2023-08-04 06:14:50,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804964539007092 [2023-08-04 06:14:50,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2023-08-04 06:14:50,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2023-08-04 06:14:50,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:14:50,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2023-08-04 06:14:50,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 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 06:14:50,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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 06:14:50,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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 06:14:50,850 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 104 flow. Second operand 4 states and 542 transitions. [2023-08-04 06:14:50,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:14:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:14:50,851 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:14:50,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, 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=19, PETRI_TRANSITIONS=0} [2023-08-04 06:14:50,853 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -27 predicate places. [2023-08-04 06:14:50,853 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:14:50,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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 06:14:50,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:14:50,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:14:50,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:14:50,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:14:51,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:14:51,064 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:14:51,065 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:14:51,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:14:51,155 INFO L124 PetriNetUnfolderBase]: 62/924 cut-off events. [2023-08-04 06:14:51,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:51,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 924 events. 62/924 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5699 event pairs, 0 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-08-04 06:14:51,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:14:51,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 123 transitions, 266 flow [2023-08-04 06:14:51,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:14:51,159 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 123 transitions, 266 flow [2023-08-04 06:14:51,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 123 transitions, 266 flow [2023-08-04 06:14:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 123 transitions, 266 flow [2023-08-04 06:14:51,197 INFO L124 PetriNetUnfolderBase]: 14/428 cut-off events. [2023-08-04 06:14:51,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:51,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 428 events. 14/428 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1964 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-04 06:14:51,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 2104 [2023-08-04 06:14:54,281 INFO L134 LiptonReduction]: Checked pairs total: 4695 [2023-08-04 06:14:54,281 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 06:14:54,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:14:54,284 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;@2c0cbed2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:14:54,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:14:54,286 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:14:54,286 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 06:14:54,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:14:54,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:54,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:14:54,287 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 06:14:54,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -24343728, now seen corresponding path program 1 times [2023-08-04 06:14:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170817704] [2023-08-04 06:14:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:14:54,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:14:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:14:54,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:14:54,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:14:54,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:14:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:14:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:14:54,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:14:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:14:54,349 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:14:54,350 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:14:54,350 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:14:54,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:14:54,384 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:14:54,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 184 transitions, 416 flow [2023-08-04 06:14:54,807 INFO L124 PetriNetUnfolderBase]: 282/4296 cut-off events. [2023-08-04 06:14:54,807 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:14:54,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4585 conditions, 4296 events. 282/4296 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41719 event pairs, 0 based on Foata normal form. 0/3759 useless extension candidates. Maximal degree in co-relation 3091. Up to 162 conditions per place. [2023-08-04 06:14:54,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 184 transitions, 416 flow [2023-08-04 06:14:54,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 181 transitions, 398 flow [2023-08-04 06:14:54,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:14:54,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 181 transitions, 398 flow [2023-08-04 06:14:54,837 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 181 transitions, 398 flow [2023-08-04 06:14:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 181 transitions, 398 flow [2023-08-04 06:14:55,242 INFO L124 PetriNetUnfolderBase]: 282/4283 cut-off events. [2023-08-04 06:14:55,242 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:14:55,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 4283 events. 282/4283 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41546 event pairs, 0 based on Foata normal form. 0/3746 useless extension candidates. Maximal degree in co-relation 3061. Up to 162 conditions per place. [2023-08-04 06:14:55,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 8836 [2023-08-04 06:14:58,774 INFO L134 LiptonReduction]: Checked pairs total: 22467 [2023-08-04 06:14:58,774 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-04 06:14:58,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:14:58,777 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;@2c0cbed2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:14:58,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:14:58,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:14:58,780 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-04 06:14:58,780 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 06:14:58,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:14:58,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:14:58,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:14:58,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:14:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash -907918871, now seen corresponding path program 1 times [2023-08-04 06:14:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:14:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231295197] [2023-08-04 06:14:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:14:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:14:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:14:58,831 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 06:14:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:14:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231295197] [2023-08-04 06:14:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231295197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:14:58,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:14:58,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:14:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978332649] [2023-08-04 06:14:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:14:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:14:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:14:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:14:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:14:58,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 321 [2023-08-04 06:14:58,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 06:14:58,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:14:58,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 321 [2023-08-04 06:14:58,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand