/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_mix044_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:10:26,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:10:26,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:10:26,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:10:26,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:10:26,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:10:26,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:10:26,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:10:26,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:10:26,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:10:26,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:10:26,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:10:26,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:10:26,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:10:26,122 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:10:26,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:10:26,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:10:26,123 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:10:26,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:10:26,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:10:26,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:10:26,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:10:26,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:10:26,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:10:26,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:10:26,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:10:26,127 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:10:26,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:10:26,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:10:26,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:10:26,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:10:26,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:10:26,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:10:26,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:10:26,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:10:26,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:10:26,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:10:26,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:10:26,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:10:26,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:10:26,130 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:10:26,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:10:26,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:10:26,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:10:26,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:10:26,347 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:10:26,347 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:10:26,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_tso.oepc_bound2.i [2023-08-04 06:10:27,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:10:27,583 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:10:27,583 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix044_tso.oepc_bound2.i [2023-08-04 06:10:27,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb058e10/a0e1eaadefb7473ca48fa83bcb2bfa34/FLAGf01b0b817 [2023-08-04 06:10:27,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb058e10/a0e1eaadefb7473ca48fa83bcb2bfa34 [2023-08-04 06:10:27,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:10:27,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:10:27,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:10:27,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:10:27,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:10:27,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:10:27" (1/1) ... [2023-08-04 06:10:27,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368097cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:27, skipping insertion in model container [2023-08-04 06:10:27,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:10:27" (1/1) ... [2023-08-04 06:10:27,642 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:10:27,772 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_mix044_tso.oepc_bound2.i[949,962] [2023-08-04 06:10:27,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:10:27,972 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:10:27,981 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_mix044_tso.oepc_bound2.i[949,962] [2023-08-04 06:10:27,997 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:10:27,999 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:10:28,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:10:28,056 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:10:28,057 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:10:28,063 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:10:28,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28 WrapperNode [2023-08-04 06:10:28,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:10:28,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:10:28,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:10:28,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:10:28,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,139 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-08-04 06:10:28,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:10:28,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:10:28,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:10:28,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:10:28,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:10:28,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:10:28,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:10:28,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:10:28,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (1/1) ... [2023-08-04 06:10:28,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:10:28,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:28,203 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 06:10:28,205 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 06:10:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:10:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:10:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:10:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:10:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:10:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:10:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:10:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:10:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:10:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:10:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:10:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:10:28,240 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 06:10:28,363 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:10:28,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:10:28,665 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:10:28,762 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:10:28,762 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:10:28,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:10:28 BoogieIcfgContainer [2023-08-04 06:10:28,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:10:28,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:10:28,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:10:28,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:10:28,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:10:27" (1/3) ... [2023-08-04 06:10:28,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd66844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:10:28, skipping insertion in model container [2023-08-04 06:10:28,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:10:28" (2/3) ... [2023-08-04 06:10:28,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd66844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:10:28, skipping insertion in model container [2023-08-04 06:10:28,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:10:28" (3/3) ... [2023-08-04 06:10:28,771 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix044_tso.oepc_bound2.i [2023-08-04 06:10:28,778 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:10:28,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:10:28,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:10:28,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:10:28,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:10:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:29,086 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:10:29,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:29,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5869 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 06:10:29,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:29,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 159 transitions, 336 flow [2023-08-04 06:10:29,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:29,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 336 flow [2023-08-04 06:10:29,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 336 flow [2023-08-04 06:10:29,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 336 flow [2023-08-04 06:10:29,242 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-04 06:10:29,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:29,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 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 5861 event pairs, 0 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 06:10:29,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 4566 [2023-08-04 06:10:32,704 INFO L134 LiptonReduction]: Checked pairs total: 11374 [2023-08-04 06:10:32,705 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 06:10:32,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:10:32,718 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;@468a06d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:32,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:10:32,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:32,721 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-04 06:10:32,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:32,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:32,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:10:32,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:32,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 643306821, now seen corresponding path program 1 times [2023-08-04 06:10:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996878750] [2023-08-04 06:10:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:32,920 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 06:10:32,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996878750] [2023-08-04 06:10:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996878750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:10:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:10:32,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511879575] [2023-08-04 06:10:32,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:32,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:10:32,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 06:10:32,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 06:10:32,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:32,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 06:10:32,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:35,202 INFO L124 PetriNetUnfolderBase]: 17375/25286 cut-off events. [2023-08-04 06:10:35,202 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-04 06:10:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49847 conditions, 25286 events. 17375/25286 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 162361 event pairs, 12296 based on Foata normal form. 720/22298 useless extension candidates. Maximal degree in co-relation 49833. Up to 24148 conditions per place. [2023-08-04 06:10:35,329 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 37 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 06:10:35,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 192 flow [2023-08-04 06:10:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:10:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:10:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-04 06:10:35,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171232876712328 [2023-08-04 06:10:35,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-04 06:10:35,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-04 06:10:35,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:35,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-04 06:10:35,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 06:10:35,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 06:10:35,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 06:10:35,359 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 106 flow. Second operand 3 states and 453 transitions. [2023-08-04 06:10:35,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 192 flow [2023-08-04 06:10:35,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:10:35,364 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 112 flow [2023-08-04 06:10:35,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 06:10:35,368 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-04 06:10:35,369 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 112 flow [2023-08-04 06:10:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 06:10:35,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:10:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:10:35,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:10:35,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash 231913378, now seen corresponding path program 1 times [2023-08-04 06:10:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425873182] [2023-08-04 06:10:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:35,498 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 06:10:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425873182] [2023-08-04 06:10:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425873182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:10:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236507542] [2023-08-04 06:10:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:10:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:10:35,502 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 06:10:35,508 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 06:10:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:35,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:10:35,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:10:35,670 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 06:10:35,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:10:35,706 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 06:10:35,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236507542] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:10:35,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:10:35,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:10:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302296780] [2023-08-04 06:10:35,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:10:35,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:10:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:10:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:10:35,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 06:10:35,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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 06:10:35,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:35,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 06:10:35,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:10:35,737 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:10:35,737 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:10:35,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 21 events. 6/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 06:10:35,737 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:10:35,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-04 06:10:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:10:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:10:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 06:10:35,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476027397260274 [2023-08-04 06:10:35,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 06:10:35,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 06:10:35,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:10:35,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 06:10:35,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 06:10:35,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 06:10:35,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 06:10:35,744 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 112 flow. Second operand 4 states and 556 transitions. [2023-08-04 06:10:35,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-04 06:10:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 06:10:35,744 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 06:10:35,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 06:10:35,745 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -35 predicate places. [2023-08-04 06:10:35,745 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 06:10:35,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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 06:10:35,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:10:35,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:10:35,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:10:35,759 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 06:10:35,954 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 06:10:35,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:10:35,957 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:10:35,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:36,022 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:10:36,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:36,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5869 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-04 06:10:36,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-04 06:10:36,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:36,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 129 transitions, 278 flow [2023-08-04 06:10:36,056 INFO L124 PetriNetUnfolderBase]: 14/446 cut-off events. [2023-08-04 06:10:36,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:36,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 446 events. 14/446 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2078 event pairs, 0 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-04 06:10:36,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 2658 [2023-08-04 06:10:38,863 INFO L134 LiptonReduction]: Checked pairs total: 6507 [2023-08-04 06:10:38,864 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 06:10:38,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:10:38,867 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;@468a06d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:38,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:10:38,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:38,870 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 06:10:38,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:38,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:38,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:10:38,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:10:38,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1420481779, now seen corresponding path program 1 times [2023-08-04 06:10:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:38,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907961661] [2023-08-04 06:10:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:10:38,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:10:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:10:38,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:10:38,904 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:10:38,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:10:38,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:10:38,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:10:38,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:10:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 06:10:38,905 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:10:38,905 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:10:38,906 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:10:38,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:10:38,924 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:10:38,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:39,258 INFO L124 PetriNetUnfolderBase]: 282/4383 cut-off events. [2023-08-04 06:10:39,258 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:10:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 4383 events. 282/4383 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42843 event pairs, 0 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 3151. Up to 162 conditions per place. [2023-08-04 06:10:39,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 195 transitions, 438 flow [2023-08-04 06:10:39,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 194 transitions, 432 flow [2023-08-04 06:10:39,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:10:39,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 194 transitions, 432 flow [2023-08-04 06:10:39,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 194 transitions, 432 flow [2023-08-04 06:10:39,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 194 transitions, 432 flow [2023-08-04 06:10:39,733 INFO L124 PetriNetUnfolderBase]: 282/4382 cut-off events. [2023-08-04 06:10:39,733 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 06:10:39,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 4382 events. 282/4382 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42836 event pairs, 0 based on Foata normal form. 0/3893 useless extension candidates. Maximal degree in co-relation 3148. Up to 162 conditions per place. [2023-08-04 06:10:39,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 11292 [2023-08-04 06:10:43,244 INFO L134 LiptonReduction]: Checked pairs total: 35798 [2023-08-04 06:10:43,245 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-04 06:10:43,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:10:43,247 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;@468a06d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:10:43,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:10:43,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:10:43,249 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 06:10:43,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:10:43,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:10:43,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:10:43,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:10:43,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:10:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1091892278, now seen corresponding path program 1 times [2023-08-04 06:10:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:10:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392845470] [2023-08-04 06:10:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:10:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:10:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:10:43,306 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 06:10:43,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:10:43,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392845470] [2023-08-04 06:10:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392845470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:10:43,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:10:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:10:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24134031] [2023-08-04 06:10:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:10:43,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:10:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:10:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:10:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:10:43,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 335 [2023-08-04 06:10:43,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 06:10:43,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:10:43,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 335 [2023-08-04 06:10:43,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand