/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_mix055.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:17:43,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:17:43,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:17:43,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:17:43,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:17:43,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:17:43,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:17:43,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:17:43,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:17:43,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:17:43,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:17:43,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:17:43,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:17:43,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:17:43,209 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:17:43,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:17:43,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:17:43,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:17:43,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:17:43,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:17:43,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:17:43,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:17:43,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:17:43,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:17:43,212 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:17:43,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:17:43,213 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:17:43,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:17:43,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:17:43,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:17:43,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:17:43,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:17:43,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:17:43,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:17:43,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:17:43,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:17:43,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:17:43,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:17:43,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:17:43,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:17:43,217 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:17:43,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:17:43,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:17:43,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:17:43,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:17:43,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:17:43,465 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:17:43,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix055.opt_bound2.i [2023-08-04 06:17:44,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:17:44,788 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:17:44,789 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix055.opt_bound2.i [2023-08-04 06:17:44,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecbd6c8b0/bbea94a8fde0456f8f95c4f6e2a2e979/FLAG68dfab151 [2023-08-04 06:17:44,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecbd6c8b0/bbea94a8fde0456f8f95c4f6e2a2e979 [2023-08-04 06:17:44,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:17:44,821 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:17:44,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:17:44,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:17:44,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:17:44,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:17:44" (1/1) ... [2023-08-04 06:17:44,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4374ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:44, skipping insertion in model container [2023-08-04 06:17:44,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:17:44" (1/1) ... [2023-08-04 06:17:44,866 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:17:45,017 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_mix055.opt_bound2.i[944,957] [2023-08-04 06:17:45,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:17:45,248 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:17:45,260 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_mix055.opt_bound2.i[944,957] [2023-08-04 06:17:45,283 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:17:45,284 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:17:45,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:17:45,358 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:17:45,358 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:17:45,364 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:17:45,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45 WrapperNode [2023-08-04 06:17:45,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:17:45,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:17:45,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:17:45,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:17:45,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,429 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2023-08-04 06:17:45,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:17:45,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:17:45,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:17:45,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:17:45,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:17:45,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:17:45,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:17:45,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:17:45,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (1/1) ... [2023-08-04 06:17:45,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:17:45,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:45,524 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 06:17:45,537 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 06:17:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:17:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:17:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:17:45,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:17:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:17:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:17:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:17:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:17:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:17:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:17:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:17:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:17:45,564 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 06:17:45,685 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:17:45,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:17:45,977 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:17:46,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:17:46,140 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:17:46,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:17:46 BoogieIcfgContainer [2023-08-04 06:17:46,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:17:46,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:17:46,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:17:46,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:17:46,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:17:44" (1/3) ... [2023-08-04 06:17:46,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3bb53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:17:46, skipping insertion in model container [2023-08-04 06:17:46,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:45" (2/3) ... [2023-08-04 06:17:46,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3bb53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:17:46, skipping insertion in model container [2023-08-04 06:17:46,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:17:46" (3/3) ... [2023-08-04 06:17:46,152 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix055.opt_bound2.i [2023-08-04 06:17:46,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:17:46,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:17:46,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:17:46,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:17:46,220 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:17:46,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:17:46,467 INFO L124 PetriNetUnfolderBase]: 62/927 cut-off events. [2023-08-04 06:17:46,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:46,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 927 events. 62/927 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5735 event pairs, 0 based on Foata normal form. 0/811 useless extension candidates. Maximal degree in co-relation 548. Up to 32 conditions per place. [2023-08-04 06:17:46,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:17:46,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 151 transitions, 316 flow [2023-08-04 06:17:46,487 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:46,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 151 transitions, 316 flow [2023-08-04 06:17:46,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 151 transitions, 316 flow [2023-08-04 06:17:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 151 transitions, 316 flow [2023-08-04 06:17:46,600 INFO L124 PetriNetUnfolderBase]: 62/920 cut-off events. [2023-08-04 06:17:46,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 920 events. 62/920 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5661 event pairs, 0 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 534. Up to 32 conditions per place. [2023-08-04 06:17:46,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 3794 [2023-08-04 06:17:50,540 INFO L134 LiptonReduction]: Checked pairs total: 9373 [2023-08-04 06:17:50,540 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-04 06:17:50,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:17:50,558 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;@49e7c7c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:17:50,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:17:50,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:17:50,563 INFO L124 PetriNetUnfolderBase]: 1/40 cut-off events. [2023-08-04 06:17:50,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:50,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:50,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:50,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:50,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1044302336, now seen corresponding path program 1 times [2023-08-04 06:17:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98304389] [2023-08-04 06:17:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:50,825 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 06:17:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98304389] [2023-08-04 06:17:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98304389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:50,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:50,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:17:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537306564] [2023-08-04 06:17:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:50,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:50,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-04 06:17:50,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 06:17:50,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:50,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-04 06:17:50,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:52,164 INFO L124 PetriNetUnfolderBase]: 7844/11636 cut-off events. [2023-08-04 06:17:52,165 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 06:17:52,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23078 conditions, 11636 events. 7844/11636 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 72553 event pairs, 5586 based on Foata normal form. 360/10190 useless extension candidates. Maximal degree in co-relation 23064. Up to 11232 conditions per place. [2023-08-04 06:17:52,246 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 33 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 06:17:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 168 flow [2023-08-04 06:17:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-04 06:17:52,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147232037691402 [2023-08-04 06:17:52,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-04 06:17:52,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-04 06:17:52,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:52,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-04 06:17:52,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 06:17:52,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:52,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:52,285 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 92 flow. Second operand 3 states and 437 transitions. [2023-08-04 06:17:52,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 168 flow [2023-08-04 06:17:52,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:17:52,290 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 98 flow [2023-08-04 06:17:52,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-04 06:17:52,295 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 06:17:52,295 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 98 flow [2023-08-04 06:17:52,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 06:17:52,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:52,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:52,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:17:52,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:52,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1022599404, now seen corresponding path program 1 times [2023-08-04 06:17:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160125985] [2023-08-04 06:17:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:52,406 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 06:17:52,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:52,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160125985] [2023-08-04 06:17:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160125985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323474832] [2023-08-04 06:17:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:52,410 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 06:17:52,445 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 06:17:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:52,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:17:52,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:52,564 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 06:17:52,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:17:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323474832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:52,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:17:52,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:17:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938877975] [2023-08-04 06:17:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:52,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:52,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:52,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-04 06:17:52,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 98 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 06:17:52,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:52,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-04 06:17:52,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:53,517 INFO L124 PetriNetUnfolderBase]: 6311/9167 cut-off events. [2023-08-04 06:17:53,518 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 06:17:53,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 9167 events. 6311/9167 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 53557 event pairs, 5455 based on Foata normal form. 0/7816 useless extension candidates. Maximal degree in co-relation 18186. Up to 8842 conditions per place. [2023-08-04 06:17:53,576 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 35 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 06:17:53,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 184 flow [2023-08-04 06:17:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-04 06:17:53,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159010600706714 [2023-08-04 06:17:53,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-04 06:17:53,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-04 06:17:53,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:53,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-04 06:17:53,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 06:17:53,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:53,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:53,587 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 98 flow. Second operand 3 states and 438 transitions. [2023-08-04 06:17:53,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 184 flow [2023-08-04 06:17:53,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:17:53,590 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 102 flow [2023-08-04 06:17:53,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-04 06:17:53,591 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-04 06:17:53,591 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 102 flow [2023-08-04 06:17:53,592 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 06:17:53,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:53,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:53,603 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 06:17:53,804 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 06:17:53,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:53,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -818817616, now seen corresponding path program 1 times [2023-08-04 06:17:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836651790] [2023-08-04 06:17:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:53,882 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 06:17:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836651790] [2023-08-04 06:17:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836651790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148304923] [2023-08-04 06:17:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:53,885 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 06:17:53,888 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 06:17:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:53,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:17:53,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:53,995 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 06:17:53,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:17:53,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148304923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:53,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:17:53,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:17:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904298094] [2023-08-04 06:17:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:53,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:54,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-04 06:17:54,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 102 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 06:17:54,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:54,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-04 06:17:54,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:54,725 INFO L124 PetriNetUnfolderBase]: 5387/7774 cut-off events. [2023-08-04 06:17:54,725 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 06:17:54,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15418 conditions, 7774 events. 5387/7774 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 43719 event pairs, 4802 based on Foata normal form. 0/6693 useless extension candidates. Maximal degree in co-relation 15401. Up to 7340 conditions per place. [2023-08-04 06:17:54,770 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 38 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 06:17:54,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 200 flow [2023-08-04 06:17:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-04 06:17:54,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519434628975265 [2023-08-04 06:17:54,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-04 06:17:54,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-04 06:17:54,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:54,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-04 06:17:54,774 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 06:17:54,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:54,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 06:17:54,776 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 102 flow. Second operand 3 states and 441 transitions. [2023-08-04 06:17:54,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 200 flow [2023-08-04 06:17:54,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:17:54,778 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 106 flow [2023-08-04 06:17:54,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-08-04 06:17:54,779 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 06:17:54,779 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 106 flow [2023-08-04 06:17:54,780 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 06:17:54,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:54,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:54,785 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 06:17:54,985 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 06:17:54,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:54,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1701333790, now seen corresponding path program 1 times [2023-08-04 06:17:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116470214] [2023-08-04 06:17:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:55,070 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 06:17:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:55,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116470214] [2023-08-04 06:17:55,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116470214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:55,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041361723] [2023-08-04 06:17:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:55,073 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 06:17:55,075 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 06:17:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:55,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:17:55,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:55,219 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 06:17:55,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:17:55,235 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 06:17:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041361723] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:17:55,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:17:55,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:17:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080857301] [2023-08-04 06:17:55,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:17:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:17:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:17:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:55,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-04 06:17:55,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:55,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:55,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-04 06:17:55,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:55,267 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:17:55,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:55,268 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 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 06:17:55,268 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:17:55,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:17:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:17:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:17:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2023-08-04 06:17:55,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752650176678445 [2023-08-04 06:17:55,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2023-08-04 06:17:55,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2023-08-04 06:17:55,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:55,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2023-08-04 06:17:55,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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 06:17:55,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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 06:17:55,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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 06:17:55,274 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 106 flow. Second operand 4 states and 538 transitions. [2023-08-04 06:17:55,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:17:55,274 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 06:17:55,275 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:17:55,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, 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 06:17:55,275 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -28 predicate places. [2023-08-04 06:17:55,275 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:17:55,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:55,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:17:55,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:17:55,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:17:55,291 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 06:17:55,485 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 06:17:55,486 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:17:55,487 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:17:55,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:17:55,592 INFO L124 PetriNetUnfolderBase]: 62/927 cut-off events. [2023-08-04 06:17:55,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:55,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 927 events. 62/927 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5735 event pairs, 0 based on Foata normal form. 0/811 useless extension candidates. Maximal degree in co-relation 548. Up to 32 conditions per place. [2023-08-04 06:17:55,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 328 flow [2023-08-04 06:17:55,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 123 transitions, 266 flow [2023-08-04 06:17:55,596 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:55,596 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 123 transitions, 266 flow [2023-08-04 06:17:55,596 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 123 transitions, 266 flow [2023-08-04 06:17:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 123 transitions, 266 flow [2023-08-04 06:17:55,632 INFO L124 PetriNetUnfolderBase]: 14/431 cut-off events. [2023-08-04 06:17:55,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:55,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 431 events. 14/431 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1989 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-04 06:17:55,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 2194 [2023-08-04 06:17:58,712 INFO L134 LiptonReduction]: Checked pairs total: 5079 [2023-08-04 06:17:58,712 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 06:17:58,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:17:58,721 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;@49e7c7c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:17:58,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:17:58,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:17:58,725 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:17:58,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:58,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:58,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:17:58,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:17:58,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 237354966, now seen corresponding path program 1 times [2023-08-04 06:17:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971030227] [2023-08-04 06:17:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:58,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:58,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:17:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:58,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:17:58,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:17:58,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:17:58,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:17:58,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:17:58,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:17:58,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:17:58,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:17:58,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:17:58,761 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:17:58,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:17:58,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:17:58,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 185 transitions, 418 flow [2023-08-04 06:17:59,321 INFO L124 PetriNetUnfolderBase]: 282/4313 cut-off events. [2023-08-04 06:17:59,322 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:17:59,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 4313 events. 282/4313 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41941 event pairs, 0 based on Foata normal form. 0/3776 useless extension candidates. Maximal degree in co-relation 3108. Up to 162 conditions per place. [2023-08-04 06:17:59,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 185 transitions, 418 flow [2023-08-04 06:17:59,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 182 transitions, 400 flow [2023-08-04 06:17:59,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:59,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 182 transitions, 400 flow [2023-08-04 06:17:59,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 182 transitions, 400 flow [2023-08-04 06:17:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 182 transitions, 400 flow [2023-08-04 06:17:59,723 INFO L124 PetriNetUnfolderBase]: 282/4300 cut-off events. [2023-08-04 06:17:59,724 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:17:59,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 4300 events. 282/4300 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41769 event pairs, 0 based on Foata normal form. 0/3763 useless extension candidates. Maximal degree in co-relation 3069. Up to 162 conditions per place. [2023-08-04 06:17:59,812 INFO L119 LiptonReduction]: Number of co-enabled transitions 9248 [2023-08-04 06:18:03,401 INFO L134 LiptonReduction]: Checked pairs total: 26193 [2023-08-04 06:18:03,401 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-04 06:18:03,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:18:03,403 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;@49e7c7c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:18:03,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:18:03,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:18:03,406 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-08-04 06:18:03,406 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 06:18:03,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:18:03,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:18:03,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:18:03,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:18:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 591088818, now seen corresponding path program 1 times [2023-08-04 06:18:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:18:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940185432] [2023-08-04 06:18:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:18:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:18:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:18:03,447 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 06:18:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:18:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940185432] [2023-08-04 06:18:03,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940185432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:18:03,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:18:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:18:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495017286] [2023-08-04 06:18:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:18:03,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:18:03,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:18:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:18:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:18:03,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 322 [2023-08-04 06:18:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 160 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 06:18:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:18:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 322 [2023-08-04 06:18:03,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand