/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_mix023_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:49:38,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:49:38,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:49:38,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:49:38,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:49:38,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:49:38,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:49:38,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:49:38,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:49:38,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:49:38,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:49:38,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:49:38,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:49:38,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:49:38,192 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:49:38,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:49:38,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:49:38,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:49:38,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:49:38,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:49:38,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:49:38,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:49:38,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:49:38,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:49:38,200 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:49:38,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:49:38,201 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:49:38,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:49:38,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:49:38,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:49:38,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:49:38,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:49:38,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:49:38,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:49:38,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:49:38,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:49:38,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:49:38,204 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:49:38,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:49:38,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:49:38,205 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:49:38,209 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:49:38,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:49:38,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:49:38,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:49:38,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:49:38,461 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:49:38,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix023_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:49:39,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:49:39,945 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:49:39,945 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix023_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:49:39,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9312c2eeb/26bc5210ef8f4068a0e702658ca0a2db/FLAG5a63612e3 [2023-08-04 05:49:39,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9312c2eeb/26bc5210ef8f4068a0e702658ca0a2db [2023-08-04 05:49:39,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:49:39,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:49:39,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:49:39,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:49:39,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:49:39,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:49:39" (1/1) ... [2023-08-04 05:49:39,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598e1b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:39, skipping insertion in model container [2023-08-04 05:49:39,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:49:39" (1/1) ... [2023-08-04 05:49:40,030 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:49:40,156 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_mix023_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-04 05:49:40,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:49:40,355 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:49:40,367 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_mix023_power.opt_pso.opt_rmo.opt_bound2.i[966,979] [2023-08-04 05:49:40,379 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:49:40,381 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:49:40,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:49:40,458 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:49:40,458 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:49:40,464 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:49:40,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40 WrapperNode [2023-08-04 05:49:40,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:49:40,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:49:40,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:49:40,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:49:40,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,510 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:49:40,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:49:40,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:49:40,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:49:40,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:49:40,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:49:40,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:49:40,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:49:40,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:49:40,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (1/1) ... [2023-08-04 05:49:40,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:49:40,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:40,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 05:49:40,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 05:49:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:49:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:49:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:49:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:49:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:49:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:49:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:49:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:49:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:49:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:49:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:49:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:49:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:49:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:49:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:49:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:49:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:49:40,629 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:49:40,792 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:49:40,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:49:41,138 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:49:41,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:49:41,272 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:49:41,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:49:41 BoogieIcfgContainer [2023-08-04 05:49:41,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:49:41,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:49:41,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:49:41,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:49:41,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:49:39" (1/3) ... [2023-08-04 05:49:41,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782bae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:49:41, skipping insertion in model container [2023-08-04 05:49:41,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:49:40" (2/3) ... [2023-08-04 05:49:41,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782bae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:49:41, skipping insertion in model container [2023-08-04 05:49:41,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:49:41" (3/3) ... [2023-08-04 05:49:41,286 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix023_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 05:49:41,292 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:49:41,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:49:41,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:49:41,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:49:41,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:49:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:49:41,561 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:49:41,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:41,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5749 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 05:49:41,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:49:41,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 156 transitions, 328 flow [2023-08-04 05:49:41,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:41,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 156 transitions, 328 flow [2023-08-04 05:49:41,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 156 transitions, 328 flow [2023-08-04 05:49:41,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 328 flow [2023-08-04 05:49:41,706 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:49:41,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5712 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 550. Up to 32 conditions per place. [2023-08-04 05:49:41,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 4168 [2023-08-04 05:49:45,406 INFO L134 LiptonReduction]: Checked pairs total: 10252 [2023-08-04 05:49:45,407 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-04 05:49:45,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:49:45,424 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;@6472fef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:45,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:49:45,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:45,429 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-04 05:49:45,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:45,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:45,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:49:45,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:45,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1994046227, now seen corresponding path program 1 times [2023-08-04 05:49:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:45,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936361297] [2023-08-04 05:49:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:45,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:49:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:45,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936361297] [2023-08-04 05:49:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936361297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:45,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:49:45,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:49:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504257345] [2023-08-04 05:49:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:45,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:45,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:49:45,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 287 [2023-08-04 05:49:45,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:45,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:45,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 287 [2023-08-04 05:49:45,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:47,332 INFO L124 PetriNetUnfolderBase]: 10309/15481 cut-off events. [2023-08-04 05:49:47,332 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-04 05:49:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30354 conditions, 15481 events. 10309/15481 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 100910 event pairs, 8887 based on Foata normal form. 450/13342 useless extension candidates. Maximal degree in co-relation 30340. Up to 14573 conditions per place. [2023-08-04 05:49:47,432 INFO L140 encePairwiseOnDemand]: 283/287 looper letters, 34 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:49:47,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 178 flow [2023-08-04 05:49:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 05:49:47,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226480836236934 [2023-08-04 05:49:47,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 05:49:47,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 05:49:47,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:47,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 05:49:47,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:47,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:47,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:47,469 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 100 flow. Second operand 3 states and 450 transitions. [2023-08-04 05:49:47,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 178 flow [2023-08-04 05:49:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:49:47,473 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 106 flow [2023-08-04 05:49:47,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-04 05:49:47,478 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-04 05:49:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 106 flow [2023-08-04 05:49:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:47,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:47,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:49:47,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:47,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1765904467, now seen corresponding path program 1 times [2023-08-04 05:49:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804037826] [2023-08-04 05:49:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:49:47,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:47,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804037826] [2023-08-04 05:49:47,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804037826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:47,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899314282] [2023-08-04 05:49:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:47,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:47,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:49:47,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:49:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:47,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:49:47,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:47,747 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 05:49:47,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:49:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899314282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:47,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:49:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:49:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249568316] [2023-08-04 05:49:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:47,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 287 [2023-08-04 05:49:47,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:47,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:47,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 287 [2023-08-04 05:49:47,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:49,092 INFO L124 PetriNetUnfolderBase]: 8763/13092 cut-off events. [2023-08-04 05:49:49,092 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-04 05:49:49,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25546 conditions, 13092 events. 8763/13092 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 82623 event pairs, 7896 based on Foata normal form. 0/11063 useless extension candidates. Maximal degree in co-relation 25529. Up to 12159 conditions per place. [2023-08-04 05:49:49,177 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 37 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:49:49,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 198 flow [2023-08-04 05:49:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-04 05:49:49,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249709639953543 [2023-08-04 05:49:49,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-04 05:49:49,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-04 05:49:49,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:49,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-04 05:49:49,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,187 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 106 flow. Second operand 3 states and 452 transitions. [2023-08-04 05:49:49,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 198 flow [2023-08-04 05:49:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:49:49,189 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 110 flow [2023-08-04 05:49:49,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-08-04 05:49:49,190 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-08-04 05:49:49,190 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 110 flow [2023-08-04 05:49:49,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:49,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:49,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:49:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:49,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:49:49,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1681242410, now seen corresponding path program 1 times [2023-08-04 05:49:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:49,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557493457] [2023-08-04 05:49:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:49,494 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 05:49:49,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:49,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557493457] [2023-08-04 05:49:49,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557493457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:49:49,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794335487] [2023-08-04 05:49:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:49,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:49:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:49:49,498 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 05:49:49,506 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 05:49:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:49,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:49:49,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:49:49,627 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 05:49:49,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:49:49,644 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 05:49:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794335487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:49:49,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:49:49,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:49:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854522170] [2023-08-04 05:49:49,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:49:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:49:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:49:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:49:49,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 287 [2023-08-04 05:49:49,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:49,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 287 [2023-08-04 05:49:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:49,678 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:49:49,678 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:49:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 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 05:49:49,679 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:49:49,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 05:49:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:49:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:49:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-04 05:49:49,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48257839721254353 [2023-08-04 05:49:49,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-04 05:49:49,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-04 05:49:49,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:49,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-04 05:49:49,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 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) [2023-08-04 05:49:49,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,686 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 110 flow. Second operand 4 states and 554 transitions. [2023-08-04 05:49:49,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 05:49:49,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:49:49,687 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 05:49:49,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=18, PETRI_TRANSITIONS=0} [2023-08-04 05:49:49,688 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -32 predicate places. [2023-08-04 05:49:49,688 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 05:49:49,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:49,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:49:49,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:49:49,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:49:49,700 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 05:49:49,899 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 05:49:49,900 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 05:49:49,902 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:49:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:49:49,991 INFO L124 PetriNetUnfolderBase]: 62/935 cut-off events. [2023-08-04 05:49:49,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 935 events. 62/935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5749 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 05:49:49,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:49:49,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 05:49:49,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:49,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:49:49,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:49:49,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 05:49:50,031 INFO L124 PetriNetUnfolderBase]: 14/439 cut-off events. [2023-08-04 05:49:50,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:50,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 439 events. 14/439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2021 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2023-08-04 05:49:50,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 2408 [2023-08-04 05:49:53,344 INFO L134 LiptonReduction]: Checked pairs total: 6690 [2023-08-04 05:49:53,345 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:49:53,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:49:53,347 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;@6472fef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:53,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:49:53,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:53,355 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:49:53,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:53,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:53,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:49:53,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:49:53,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash 593093550, now seen corresponding path program 1 times [2023-08-04 05:49:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29521750] [2023-08-04 05:49:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:53,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:49:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:53,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:49:53,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:49:53,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:49:53,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:49:53,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:49:53,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:49:53,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 05:49:53,413 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:49:53,413 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:49:53,414 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:49:53,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:49:53,440 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:49:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:49:53,944 INFO L124 PetriNetUnfolderBase]: 282/4339 cut-off events. [2023-08-04 05:49:53,944 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:49:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 4339 events. 282/4339 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 41952 event pairs, 0 based on Foata normal form. 0/3838 useless extension candidates. Maximal degree in co-relation 3134. Up to 162 conditions per place. [2023-08-04 05:49:53,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:49:53,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 189 transitions, 418 flow [2023-08-04 05:49:53,986 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:49:53,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 189 transitions, 418 flow [2023-08-04 05:49:53,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 189 transitions, 418 flow [2023-08-04 05:49:53,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 189 transitions, 418 flow [2023-08-04 05:49:54,529 INFO L124 PetriNetUnfolderBase]: 282/4335 cut-off events. [2023-08-04 05:49:54,529 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-04 05:49:54,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 4335 events. 282/4335 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 41925 event pairs, 0 based on Foata normal form. 0/3834 useless extension candidates. Maximal degree in co-relation 3122. Up to 162 conditions per place. [2023-08-04 05:49:54,604 INFO L119 LiptonReduction]: Number of co-enabled transitions 10236 [2023-08-04 05:49:58,101 INFO L134 LiptonReduction]: Checked pairs total: 32429 [2023-08-04 05:49:58,101 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 05:49:58,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:49:58,104 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;@6472fef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:49:58,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:49:58,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:49:58,106 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-04 05:49:58,106 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:49:58,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:58,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:49:58,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:49:58,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1546030067, now seen corresponding path program 1 times [2023-08-04 05:49:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286916486] [2023-08-04 05:49:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:49:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:49:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:49:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286916486] [2023-08-04 05:49:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286916486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:49:58,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:49:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:49:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501382691] [2023-08-04 05:49:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:49:58,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:49:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:49:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:49:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:49:58,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 330 [2023-08-04 05:49:58,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:58,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:49:58,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 330 [2023-08-04 05:49:58,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand