/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_mix040.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:06:43,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:06:43,260 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:06:43,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:06:43,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:06:43,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:06:43,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:06:43,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:06:43,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:06:43,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:06:43,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:06:43,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:06:43,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:06:43,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:06:43,308 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:06:43,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:06:43,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:06:43,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:06:43,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:06:43,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:06:43,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:06:43,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:06:43,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:06:43,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:06:43,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:06:43,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:06:43,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:06:43,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:06:43,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:06:43,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:06:43,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:06:43,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:06:43,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:06:43,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:06:43,315 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:06:43,316 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:06:43,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:06:43,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:06:43,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:06:43,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:06:43,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:06:43,635 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:06:43,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix040.opt_bound2.i [2023-08-04 06:06:44,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:06:45,229 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:06:45,230 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix040.opt_bound2.i [2023-08-04 06:06:45,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c80cf8f/c95d70eb93b74d5e9d38ec0af6fcbe98/FLAG6c28bad45 [2023-08-04 06:06:45,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c80cf8f/c95d70eb93b74d5e9d38ec0af6fcbe98 [2023-08-04 06:06:45,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:06:45,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:06:45,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:06:45,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:06:45,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:06:45,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108165ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45, skipping insertion in model container [2023-08-04 06:06:45,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,345 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:06:45,534 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_mix040.opt_bound2.i[944,957] [2023-08-04 06:06:45,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:06:45,787 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:06:45,801 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_mix040.opt_bound2.i[944,957] [2023-08-04 06:06:45,822 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:06:45,828 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:06:45,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:06:45,891 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:06:45,891 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:06:45,897 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:06:45,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45 WrapperNode [2023-08-04 06:06:45,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:06:45,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:06:45,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:06:45,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:06:45,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,943 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 183 [2023-08-04 06:06:45,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:06:45,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:06:45,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:06:45,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:06:45,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:06:45,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:06:45,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:06:45,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:06:45,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (1/1) ... [2023-08-04 06:06:45,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:06:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:06:46,025 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 06:06:46,026 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 06:06:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:06:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:06:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:06:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:06:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:06:46,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:06:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:06:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:06:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:06:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:06:46,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:06:46,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:06:46,059 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 06:06:46,186 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:06:46,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:06:46,608 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:06:46,726 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:06:46,727 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:06:46,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:06:46 BoogieIcfgContainer [2023-08-04 06:06:46,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:06:46,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:06:46,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:06:46,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:06:46,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:06:45" (1/3) ... [2023-08-04 06:06:46,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cfc3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:06:46, skipping insertion in model container [2023-08-04 06:06:46,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:06:45" (2/3) ... [2023-08-04 06:06:46,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cfc3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:06:46, skipping insertion in model container [2023-08-04 06:06:46,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:06:46" (3/3) ... [2023-08-04 06:06:46,741 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix040.opt_bound2.i [2023-08-04 06:06:46,750 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:06:46,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:06:46,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:06:46,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:06:46,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:06:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:06:47,153 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:06:47,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:06:47,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5880 event pairs, 0 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-04 06:06:47,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:06:47,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 154 transitions, 322 flow [2023-08-04 06:06:47,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:06:47,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 154 transitions, 322 flow [2023-08-04 06:06:47,198 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 154 transitions, 322 flow [2023-08-04 06:06:47,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 322 flow [2023-08-04 06:06:47,335 INFO L124 PetriNetUnfolderBase]: 62/934 cut-off events. [2023-08-04 06:06:47,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:06:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 934 events. 62/934 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5809 event pairs, 0 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 532. Up to 32 conditions per place. [2023-08-04 06:06:47,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 3880 [2023-08-04 06:06:51,515 INFO L134 LiptonReduction]: Checked pairs total: 8822 [2023-08-04 06:06:51,515 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 06:06:51,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:06:51,534 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;@635165d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:06:51,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:06:51,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:06:51,541 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-08-04 06:06:51,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:06:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:06:51,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:06:51,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:06:51,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:06:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1414707172, now seen corresponding path program 1 times [2023-08-04 06:06:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:06:51,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737377667] [2023-08-04 06:06:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:06:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:51,799 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 06:06:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:06:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737377667] [2023-08-04 06:06:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737377667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:06:51,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:06:51,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:06:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894382908] [2023-08-04 06:06:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:06:51,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:06:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:06:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:06:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:06:51,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 289 [2023-08-04 06:06:51,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 06:06:51,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:06:51,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 289 [2023-08-04 06:06:51,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:06:53,648 INFO L124 PetriNetUnfolderBase]: 9278/13913 cut-off events. [2023-08-04 06:06:53,649 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-04 06:06:53,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27425 conditions, 13913 events. 9278/13913 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 89080 event pairs, 6660 based on Foata normal form. 420/12446 useless extension candidates. Maximal degree in co-relation 27411. Up to 13206 conditions per place. [2023-08-04 06:06:53,765 INFO L140 encePairwiseOnDemand]: 285/289 looper letters, 34 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 06:06:53,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 170 flow [2023-08-04 06:06:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:06:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:06:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 06:06:53,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190311418685121 [2023-08-04 06:06:53,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 06:06:53,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 06:06:53,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:06:53,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 06:06:53,797 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 06:06:53,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:53,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:53,807 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 92 flow. Second operand 3 states and 450 transitions. [2023-08-04 06:06:53,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 170 flow [2023-08-04 06:06:53,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:06:53,813 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 98 flow [2023-08-04 06:06:53,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, 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 06:06:53,819 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 06:06:53,820 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 98 flow [2023-08-04 06:06:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 06:06:53,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:06:53,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:06:53,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:06:53,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:06:53,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:06:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash 275382124, now seen corresponding path program 1 times [2023-08-04 06:06:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:06:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998051132] [2023-08-04 06:06:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:06:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:53,946 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 06:06:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:06:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998051132] [2023-08-04 06:06:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998051132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:06:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341518034] [2023-08-04 06:06:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:06:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:06:53,951 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 06:06:53,973 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 06:06:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:54,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:06:54,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:06:54,109 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 06:06:54,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:06:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341518034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:06:54,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:06:54,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:06:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810215334] [2023-08-04 06:06:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:06:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:06:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:06:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:06:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:06:54,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 289 [2023-08-04 06:06:54,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 06:06:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:06:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 289 [2023-08-04 06:06:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:06:55,400 INFO L124 PetriNetUnfolderBase]: 7454/10931 cut-off events. [2023-08-04 06:06:55,402 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-04 06:06:55,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21587 conditions, 10931 events. 7454/10931 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 65846 event pairs, 6463 based on Foata normal form. 0/9526 useless extension candidates. Maximal degree in co-relation 21570. Up to 10390 conditions per place. [2023-08-04 06:06:55,498 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 06:06:55,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 186 flow [2023-08-04 06:06:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:06:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:06:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 06:06:55,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201845444059977 [2023-08-04 06:06:55,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 06:06:55,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 06:06:55,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:06:55,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 06:06:55,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 06:06:55,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:55,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:55,512 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 98 flow. Second operand 3 states and 451 transitions. [2023-08-04 06:06:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 186 flow [2023-08-04 06:06:55,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:06:55,514 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 102 flow [2023-08-04 06:06:55,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, 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 06:06:55,515 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-04 06:06:55,515 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 102 flow [2023-08-04 06:06:55,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 06:06:55,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:06:55,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:06:55,528 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 06:06:55,725 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 06:06:55,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:06:55,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:06:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2115912681, now seen corresponding path program 1 times [2023-08-04 06:06:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:06:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89809337] [2023-08-04 06:06:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:06:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:55,862 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 06:06:55,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:06:55,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89809337] [2023-08-04 06:06:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89809337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:06:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756805587] [2023-08-04 06:06:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:06:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:06:55,871 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 06:06:55,873 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 06:06:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:55,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:06:55,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:06:55,989 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 06:06:55,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:06:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756805587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:06:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:06:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:06:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759178257] [2023-08-04 06:06:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:06:55,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:06:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:06:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:06:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:06:56,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 289 [2023-08-04 06:06:56,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 06:06:56,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:06:56,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 289 [2023-08-04 06:06:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:06:57,022 INFO L124 PetriNetUnfolderBase]: 6350/9194 cut-off events. [2023-08-04 06:06:57,022 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 06:06:57,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 9194 events. 6350/9194 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 52869 event pairs, 4550 based on Foata normal form. 0/8077 useless extension candidates. Maximal degree in co-relation 18180. Up to 8627 conditions per place. [2023-08-04 06:06:57,092 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 06:06:57,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 202 flow [2023-08-04 06:06:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:06:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:06:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 06:06:57,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236447520184544 [2023-08-04 06:06:57,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 06:06:57,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 06:06:57,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:06:57,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 06:06:57,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 06:06:57,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:57,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 06:06:57,099 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 102 flow. Second operand 3 states and 454 transitions. [2023-08-04 06:06:57,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 202 flow [2023-08-04 06:06:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:06:57,102 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 106 flow [2023-08-04 06:06:57,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, 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 06:06:57,104 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 06:06:57,104 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 106 flow [2023-08-04 06:06:57,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 06:06:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:06:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:06:57,117 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 06:06:57,312 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 06:06:57,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:06:57,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:06:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1623666225, now seen corresponding path program 1 times [2023-08-04 06:06:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:06:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327242250] [2023-08-04 06:06:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:06:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:57,422 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 06:06:57,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:06:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327242250] [2023-08-04 06:06:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327242250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:06:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838789870] [2023-08-04 06:06:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:06:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:06:57,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:06:57,425 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 06:06:57,428 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 06:06:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:06:57,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:06:57,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:06:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:06:57,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:06:57,667 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 06:06:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838789870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:06:57,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:06:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:06:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951342477] [2023-08-04 06:06:57,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:06:57,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:06:57,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:06:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:06:57,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:06:57,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 289 [2023-08-04 06:06:57,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 06:06:57,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:06:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 289 [2023-08-04 06:06:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:06:57,716 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:06:57,716 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:06:57,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 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 06:06:57,716 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:06:57,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:06:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:06:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:06:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-04 06:06:57,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47923875432525953 [2023-08-04 06:06:57,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-04 06:06:57,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-04 06:06:57,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:06:57,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-04 06:06:57,721 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 06:06:57,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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 06:06:57,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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 06:06:57,724 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 106 flow. Second operand 4 states and 554 transitions. [2023-08-04 06:06:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:06:57,724 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 06:06:57,724 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:06:57,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, 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 06:06:57,726 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -28 predicate places. [2023-08-04 06:06:57,727 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:06:57,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 06:06:57,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:06:57,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:06:57,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:06:57,741 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 06:06:57,941 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 06:06:57,942 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:06:57,944 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:06:57,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:06:58,029 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:06:58,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:06:58,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5880 event pairs, 0 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-04 06:06:58,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:06:58,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 126 transitions, 272 flow [2023-08-04 06:06:58,035 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:06:58,036 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-04 06:06:58,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-04 06:06:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 126 transitions, 272 flow [2023-08-04 06:06:58,075 INFO L124 PetriNetUnfolderBase]: 14/445 cut-off events. [2023-08-04 06:06:58,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:06:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 445 events. 14/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2076 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-04 06:06:58,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 2216 [2023-08-04 06:07:01,335 INFO L134 LiptonReduction]: Checked pairs total: 4800 [2023-08-04 06:07:01,336 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 06:07:01,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:07:01,338 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;@635165d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:07:01,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:07:01,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:07:01,344 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:07:01,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:07:01,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:07:01,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:07:01,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:07:01,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:07:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash 415563983, now seen corresponding path program 1 times [2023-08-04 06:07:01,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:07:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580468171] [2023-08-04 06:07:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:07:01,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:07:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:07:01,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:07:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:07:01,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:07:01,389 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:07:01,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:07:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:07:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:07:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:07:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:07:01,390 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:07:01,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:07:01,391 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:07:01,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:07:01,423 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:07:01,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 189 transitions, 426 flow [2023-08-04 06:07:02,066 INFO L124 PetriNetUnfolderBase]: 282/4405 cut-off events. [2023-08-04 06:07:02,066 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:07:02,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 4405 events. 282/4405 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43256 event pairs, 0 based on Foata normal form. 0/3868 useless extension candidates. Maximal degree in co-relation 3146. Up to 162 conditions per place. [2023-08-04 06:07:02,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 189 transitions, 426 flow [2023-08-04 06:07:02,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 186 transitions, 408 flow [2023-08-04 06:07:02,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:07:02,126 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 186 transitions, 408 flow [2023-08-04 06:07:02,126 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 186 transitions, 408 flow [2023-08-04 06:07:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 186 transitions, 408 flow [2023-08-04 06:07:02,620 INFO L124 PetriNetUnfolderBase]: 282/4392 cut-off events. [2023-08-04 06:07:02,620 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:07:02,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 4392 events. 282/4392 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43055 event pairs, 0 based on Foata normal form. 0/3855 useless extension candidates. Maximal degree in co-relation 3134. Up to 162 conditions per place. [2023-08-04 06:07:02,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 9528 [2023-08-04 06:07:06,400 INFO L134 LiptonReduction]: Checked pairs total: 24974 [2023-08-04 06:07:06,400 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 06:07:06,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:07:06,403 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;@635165d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:07:06,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:07:06,408 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:07:06,408 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-08-04 06:07:06,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 06:07:06,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:07:06,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:07:06,409 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 06:07:06,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:07:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash -372582738, now seen corresponding path program 1 times [2023-08-04 06:07:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:07:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715346297] [2023-08-04 06:07:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:07:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:07:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:07:06,468 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 06:07:06,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:07:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715346297] [2023-08-04 06:07:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715346297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:07:06,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:07:06,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:07:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351131034] [2023-08-04 06:07:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:07:06,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:07:06,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:07:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:07:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:07:06,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 328 [2023-08-04 06:07:06,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 06:07:06,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:07:06,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 328 [2023-08-04 06:07:06,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand