/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/added_bound_to_unbounded/goblint-regression_28-race_reach_83-list2_racing1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:05:06,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:05:06,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:05:06,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:05:06,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:05:06,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:05:06,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:05:06,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:05:06,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:05:06,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:05:06,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:05:06,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:05:06,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:05:06,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:05:06,388 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:05:06,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:05:06,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:05:06,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:05:06,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:05:06,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:05:06,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:05:06,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:05:06,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:05:06,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:05:06,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:05:06,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:05:06,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:05:06,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:05:06,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:05:06,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:05:06,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:06,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:05:06,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:05:06,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:05:06,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:05:06,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:05:06,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:05:06,395 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:05:06,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:05:06,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:05:06,395 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:05:06,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:05:06,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:05:06,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:05:06,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:05:06,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:05:06,677 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:05:06,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_83-list2_racing1_bound2.i [2023-08-04 04:05:07,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:05:08,221 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:05:08,221 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_83-list2_racing1_bound2.i [2023-08-04 04:05:08,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293647cde/b59cfce24ebc42ae9c02e57ed7675c58/FLAG0f3b2f3f9 [2023-08-04 04:05:08,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293647cde/b59cfce24ebc42ae9c02e57ed7675c58 [2023-08-04 04:05:08,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:05:08,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:05:08,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:08,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:05:08,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:05:08,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121455cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08, skipping insertion in model container [2023-08-04 04:05:08,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:05:08,696 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_83-list2_racing1_bound2.i[47038,47051] [2023-08-04 04:05:08,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:08,751 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:05:08,778 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:08,780 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:08,792 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_83-list2_racing1_bound2.i[47038,47051] [2023-08-04 04:05:08,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:08,862 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:05:08,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08 WrapperNode [2023-08-04 04:05:08,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:08,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:08,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:05:08,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:05:08,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,920 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-08-04 04:05:08,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:08,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:05:08,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:05:08,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:05:08,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:05:08,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:05:08,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:05:08,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:05:08,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (1/1) ... [2023-08-04 04:05:08,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:08,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:09,003 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 04:05:09,014 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 04:05:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:05:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:05:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-04 04:05:09,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-04 04:05:09,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:05:09,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:05:09,059 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-04 04:05:09,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-04 04:05:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:05:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:05:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:05:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:05:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:05:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-04 04:05:09,062 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-04 04:05:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:05:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:05:09,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:05:09,064 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 04:05:09,285 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:05:09,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:05:09,657 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:05:09,665 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:05:09,665 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-04 04:05:09,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:09 BoogieIcfgContainer [2023-08-04 04:05:09,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:05:09,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:05:09,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:05:09,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:05:09,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:05:08" (1/3) ... [2023-08-04 04:05:09,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9e88b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:09, skipping insertion in model container [2023-08-04 04:05:09,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:08" (2/3) ... [2023-08-04 04:05:09,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9e88b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:09, skipping insertion in model container [2023-08-04 04:05:09,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:09" (3/3) ... [2023-08-04 04:05:09,676 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_83-list2_racing1_bound2.i [2023-08-04 04:05:09,682 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:05:09,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:05:09,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:05:09,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:05:09,785 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 04:05:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:10,152 INFO L124 PetriNetUnfolderBase]: 164/1071 cut-off events. [2023-08-04 04:05:10,153 INFO L125 PetriNetUnfolderBase]: For 36/61 co-relation queries the response was YES. [2023-08-04 04:05:10,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-04 04:05:10,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:10,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 349 transitions, 738 flow [2023-08-04 04:05:10,198 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:10,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 349 transitions, 738 flow [2023-08-04 04:05:10,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 349 transitions, 738 flow [2023-08-04 04:05:10,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 349 transitions, 738 flow [2023-08-04 04:05:10,406 INFO L124 PetriNetUnfolderBase]: 164/1070 cut-off events. [2023-08-04 04:05:10,407 INFO L125 PetriNetUnfolderBase]: For 36/54 co-relation queries the response was YES. [2023-08-04 04:05:10,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 1070 events. 164/1070 cut-off events. For 36/54 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6694 event pairs, 0 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-04 04:05:10,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 51122 [2023-08-04 04:05:24,926 INFO L134 LiptonReduction]: Checked pairs total: 106624 [2023-08-04 04:05:24,926 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-04 04:05:24,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:05:24,943 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;@76adb438, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:24,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:05:24,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:24,955 INFO L124 PetriNetUnfolderBase]: 14/102 cut-off events. [2023-08-04 04:05:24,955 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-08-04 04:05:24,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:24,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:24,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:05:24,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1015283174, now seen corresponding path program 1 times [2023-08-04 04:05:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065713850] [2023-08-04 04:05:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:25,294 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 04:05:25,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065713850] [2023-08-04 04:05:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065713850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:05:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:05:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:05:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394358179] [2023-08-04 04:05:25,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:05:25,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:05:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:05:25,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:05:25,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 627 [2023-08-04 04:05:25,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 112 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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 04:05:25,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:25,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 627 [2023-08-04 04:05:25,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:36,657 INFO L124 PetriNetUnfolderBase]: 109462/157773 cut-off events. [2023-08-04 04:05:36,658 INFO L125 PetriNetUnfolderBase]: For 4893/4893 co-relation queries the response was YES. [2023-08-04 04:05:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305889 conditions, 157773 events. 109462/157773 cut-off events. For 4893/4893 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 1151139 event pairs, 68136 based on Foata normal form. 14388/146240 useless extension candidates. Maximal degree in co-relation 276379. Up to 145615 conditions per place. [2023-08-04 04:05:37,636 INFO L140 encePairwiseOnDemand]: 602/627 looper letters, 81 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2023-08-04 04:05:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 404 flow [2023-08-04 04:05:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:05:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:05:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1013 transitions. [2023-08-04 04:05:37,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385433280170122 [2023-08-04 04:05:37,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1013 transitions. [2023-08-04 04:05:37,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1013 transitions. [2023-08-04 04:05:37,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:37,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1013 transitions. [2023-08-04 04:05:37,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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 04:05:37,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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 04:05:37,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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 04:05:37,690 INFO L175 Difference]: Start difference. First operand has 84 places, 112 transitions, 264 flow. Second operand 3 states and 1013 transitions. [2023-08-04 04:05:37,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 404 flow [2023-08-04 04:05:37,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:05:37,729 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 224 flow [2023-08-04 04:05:37,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-04 04:05:37,734 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-08-04 04:05:37,734 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 224 flow [2023-08-04 04:05:37,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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 04:05:37,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:37,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:37,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:05:37,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:05:37,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1080528569, now seen corresponding path program 1 times [2023-08-04 04:05:37,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:37,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881541408] [2023-08-04 04:05:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:37,856 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 04:05:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881541408] [2023-08-04 04:05:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881541408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:05:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113616407] [2023-08-04 04:05:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:37,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:05:37,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:37,865 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 04:05:37,882 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 04:05:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:38,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:05:38,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:05:38,096 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 04:05:38,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:05:38,112 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 04:05:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113616407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:05:38,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:05:38,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:05:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064056284] [2023-08-04 04:05:38,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:05:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:05:38,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:05:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:05:38,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2023-08-04 04:05:38,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 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 04:05:38,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:38,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2023-08-04 04:05:38,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:38,179 INFO L124 PetriNetUnfolderBase]: 14/41 cut-off events. [2023-08-04 04:05:38,180 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 04:05:38,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 41 events. 14/41 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 99. Up to 30 conditions per place. [2023-08-04 04:05:38,180 INFO L140 encePairwiseOnDemand]: 624/627 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-04 04:05:38,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 86 flow [2023-08-04 04:05:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:05:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:05:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1224 transitions. [2023-08-04 04:05:38,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2023-08-04 04:05:38,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1224 transitions. [2023-08-04 04:05:38,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1224 transitions. [2023-08-04 04:05:38,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:38,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1224 transitions. [2023-08-04 04:05:38,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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 04:05:38,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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 04:05:38,196 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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 04:05:38,196 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 224 flow. Second operand 4 states and 1224 transitions. [2023-08-04 04:05:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 86 flow [2023-08-04 04:05:38,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:05:38,197 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 04:05:38,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 04:05:38,197 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -65 predicate places. [2023-08-04 04:05:38,198 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 04:05:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 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 04:05:38,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:05:38,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:05:38,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:05:38,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:05:38,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:05:38,408 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 04:05:38,408 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:05:38,410 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:05:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,557 INFO L124 PetriNetUnfolderBase]: 164/1071 cut-off events. [2023-08-04 04:05:38,558 INFO L125 PetriNetUnfolderBase]: For 36/61 co-relation queries the response was YES. [2023-08-04 04:05:38,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-04 04:05:38,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:38,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-04 04:05:38,709 INFO L124 PetriNetUnfolderBase]: 164/1071 cut-off events. [2023-08-04 04:05:38,709 INFO L125 PetriNetUnfolderBase]: For 36/61 co-relation queries the response was YES. [2023-08-04 04:05:38,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-04 04:05:38,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-08-04 04:05:53,015 INFO L134 LiptonReduction]: Checked pairs total: 98159 [2023-08-04 04:05:53,015 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-04 04:05:53,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:05:53,018 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;@76adb438, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:53,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:05:53,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:53,023 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2023-08-04 04:05:53,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:05:53,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:53,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:05:53,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 04:05:53,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1792580423, now seen corresponding path program 1 times [2023-08-04 04:05:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633291045] [2023-08-04 04:05:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:05:53,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:05:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:05:53,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:05:53,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:05:53,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 04:05:53,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 04:05:53,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 04:05:53,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:05:53,092 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:05:53,093 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 04:05:53,093 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:05:53,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:05:53,177 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 04:05:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-08-04 04:05:54,274 INFO L124 PetriNetUnfolderBase]: 1130/5483 cut-off events. [2023-08-04 04:05:54,274 INFO L125 PetriNetUnfolderBase]: For 602/702 co-relation queries the response was YES. [2023-08-04 04:05:54,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 5483 events. 1130/5483 cut-off events. For 602/702 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50335 event pairs, 22 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-08-04 04:05:54,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-08-04 04:05:54,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 493 places, 564 transitions, 1214 flow [2023-08-04 04:05:54,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:54,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 493 places, 564 transitions, 1214 flow [2023-08-04 04:05:54,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 493 places, 564 transitions, 1214 flow [2023-08-04 04:05:54,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 564 transitions, 1214 flow [2023-08-04 04:05:55,552 INFO L124 PetriNetUnfolderBase]: 1130/5482 cut-off events. [2023-08-04 04:05:55,552 INFO L125 PetriNetUnfolderBase]: For 601/688 co-relation queries the response was YES. [2023-08-04 04:05:55,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 5482 events. 1130/5482 cut-off events. For 601/688 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50280 event pairs, 22 based on Foata normal form. 0/4620 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-08-04 04:05:56,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 192944 [2023-08-04 04:06:11,972 INFO L134 LiptonReduction]: Checked pairs total: 407330 [2023-08-04 04:06:11,972 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-08-04 04:06:11,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:06:11,975 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;@76adb438, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:06:11,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:06:11,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:06:11,986 INFO L124 PetriNetUnfolderBase]: 23/147 cut-off events. [2023-08-04 04:06:11,986 INFO L125 PetriNetUnfolderBase]: For 13/19 co-relation queries the response was YES. [2023-08-04 04:06:11,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:11,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:06:11,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 567540882, now seen corresponding path program 1 times [2023-08-04 04:06:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579906391] [2023-08-04 04:06:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:12,066 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 04:06:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579906391] [2023-08-04 04:06:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579906391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:06:12,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:06:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:06:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219256706] [2023-08-04 04:06:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:06:12,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:06:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:06:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:06:12,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 992 [2023-08-04 04:06:12,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 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 04:06:12,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:12,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 992 [2023-08-04 04:06:12,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand