/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_84-list2_racing2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:05:19,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:05:19,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:05:19,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:05:19,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:05:19,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:05:19,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:05:19,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:05:19,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:05:19,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:05:19,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:05:19,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:05:19,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:05:19,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:05:19,255 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:05:19,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:05:19,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:05:19,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:05:19,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:05:19,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:05:19,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:05:19,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:05:19,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:05:19,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:05:19,258 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:05:19,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:05:19,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:05:19,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:05:19,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:05:19,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:05:19,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:19,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:05:19,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:05:19,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:05:19,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:05:19,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:05:19,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:05:19,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:05:19,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:05:19,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:05:19,262 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:05:19,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:05:19,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:05:19,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:05:19,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:05:19,513 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:05:19,514 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:05:19,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_84-list2_racing2_bound2.i [2023-08-04 04:05:20,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:05:20,987 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:05:20,987 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_84-list2_racing2_bound2.i [2023-08-04 04:05:21,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f334750c/e1969ec367fd4141b7da7590b9f86ecd/FLAG3c0ed1523 [2023-08-04 04:05:21,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f334750c/e1969ec367fd4141b7da7590b9f86ecd [2023-08-04 04:05:21,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:05:21,029 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:05:21,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:21,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:05:21,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:05:21,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e9f5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21, skipping insertion in model container [2023-08-04 04:05:21,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,090 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:05:21,496 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_84-list2_racing2_bound2.i[47038,47051] [2023-08-04 04:05:21,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:21,572 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:05:21,598 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:21,604 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:21,615 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_84-list2_racing2_bound2.i[47038,47051] [2023-08-04 04:05:21,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:21,715 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:05:21,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21 WrapperNode [2023-08-04 04:05:21,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:21,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:21,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:05:21,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:05:21,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,766 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 384 [2023-08-04 04:05:21,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:21,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:05:21,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:05:21,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:05:21,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:05:21,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:05:21,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:05:21,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:05:21,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (1/1) ... [2023-08-04 04:05:21,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:21,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:21,844 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 04:05:21,856 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 04:05:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:05:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:05:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-04 04:05:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-04 04:05:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:05:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:05:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-04 04:05:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-04 04:05:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:05:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:05:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:05:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:05:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:05:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-04 04:05:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-04 04:05:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:05:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:05:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:05:21,885 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 04:05:22,089 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:05:22,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:05:22,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:05:22,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:05:22,653 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-04 04:05:22,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:22 BoogieIcfgContainer [2023-08-04 04:05:22,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:05:22,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:05:22,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:05:22,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:05:22,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:05:21" (1/3) ... [2023-08-04 04:05:22,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adf0652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:22, skipping insertion in model container [2023-08-04 04:05:22,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:21" (2/3) ... [2023-08-04 04:05:22,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adf0652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:22, skipping insertion in model container [2023-08-04 04:05:22,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:22" (3/3) ... [2023-08-04 04:05:22,664 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_84-list2_racing2_bound2.i [2023-08-04 04:05:22,671 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:05:22,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:05:22,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:05:22,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:05:22,788 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 04:05:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:23,201 INFO L124 PetriNetUnfolderBase]: 188/1415 cut-off events. [2023-08-04 04:05:23,201 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:05:23,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-04 04:05:23,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:23,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 392 transitions, 824 flow [2023-08-04 04:05:23,240 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:23,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 392 transitions, 824 flow [2023-08-04 04:05:23,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 392 transitions, 824 flow [2023-08-04 04:05:23,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 392 transitions, 824 flow [2023-08-04 04:05:23,480 INFO L124 PetriNetUnfolderBase]: 188/1414 cut-off events. [2023-08-04 04:05:23,480 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:05:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1414 events. 188/1414 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9364 event pairs, 0 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-04 04:05:23,574 INFO L119 LiptonReduction]: Number of co-enabled transitions 68580 [2023-08-04 04:05:38,924 INFO L134 LiptonReduction]: Checked pairs total: 126459 [2023-08-04 04:05:38,924 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-04 04:05:38,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:05:38,941 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;@32b542a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:38,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:05:38,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:38,954 INFO L124 PetriNetUnfolderBase]: 22/115 cut-off events. [2023-08-04 04:05:38,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:05:38,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:38,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:38,955 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 04:05:38,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1497562228, now seen corresponding path program 1 times [2023-08-04 04:05:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:38,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743498801] [2023-08-04 04:05:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:39,339 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 04:05:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743498801] [2023-08-04 04:05:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743498801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:05:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:05:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:05:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25805838] [2023-08-04 04:05:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:05:39,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:05:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:05:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:05:39,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 708 [2023-08-04 04:05:39,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 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 04:05:39,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:39,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 708 [2023-08-04 04:05:39,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:55,593 INFO L124 PetriNetUnfolderBase]: 161652/228390 cut-off events. [2023-08-04 04:05:55,594 INFO L125 PetriNetUnfolderBase]: For 3943/3943 co-relation queries the response was YES. [2023-08-04 04:05:55,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444724 conditions, 228390 events. 161652/228390 cut-off events. For 3943/3943 co-relation queries the response was YES. Maximal size of possible extension queue 4215. Compared 1650492 event pairs, 99144 based on Foata normal form. 20804/214559 useless extension candidates. Maximal degree in co-relation 415679. Up to 213825 conditions per place. [2023-08-04 04:05:56,594 INFO L140 encePairwiseOnDemand]: 682/708 looper letters, 88 selfloop transitions, 2 changer transitions 1/106 dead transitions. [2023-08-04 04:05:56,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 434 flow [2023-08-04 04:05:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:05:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:05:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1147 transitions. [2023-08-04 04:05:56,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400188323917138 [2023-08-04 04:05:56,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1147 transitions. [2023-08-04 04:05:56,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1147 transitions. [2023-08-04 04:05:56,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:56,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1147 transitions. [2023-08-04 04:05:56,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 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 04:05:56,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 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 04:05:56,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 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 04:05:56,640 INFO L175 Difference]: Start difference. First operand has 91 places, 121 transitions, 282 flow. Second operand 3 states and 1147 transitions. [2023-08-04 04:05:56,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 434 flow [2023-08-04 04:05:56,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:05:56,687 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 240 flow [2023-08-04 04:05:56,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=708, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2023-08-04 04:05:56,693 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-04 04:05:56,694 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 240 flow [2023-08-04 04:05:56,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 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 04:05:56,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:56,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:05:56,695 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 04:05:56,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1987446864, now seen corresponding path program 1 times [2023-08-04 04:05:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:56,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648851826] [2023-08-04 04:05:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:56,854 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 04:05:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648851826] [2023-08-04 04:05:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648851826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:05:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304179857] [2023-08-04 04:05:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:56,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:05:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:57,030 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 04:05:57,032 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 04:05:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:57,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:05:57,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:05:57,306 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 04:05:57,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:05:57,340 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 04:05:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304179857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:05:57,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:05:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:05:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095990826] [2023-08-04 04:05:57,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:05:57,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:05:57,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:05:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:05:57,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 708 [2023-08-04 04:05:57,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 346.6) internal successors, (1733), 5 states have internal predecessors, (1733), 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 04:05:57,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:57,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 708 [2023-08-04 04:05:57,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:57,418 INFO L124 PetriNetUnfolderBase]: 14/41 cut-off events. [2023-08-04 04:05:57,419 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 04:05:57,421 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 71 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 04:05:57,421 INFO L140 encePairwiseOnDemand]: 705/708 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-04 04:05:57,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 86 flow [2023-08-04 04:05:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:05:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:05:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1392 transitions. [2023-08-04 04:05:57,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915254237288136 [2023-08-04 04:05:57,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1392 transitions. [2023-08-04 04:05:57,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1392 transitions. [2023-08-04 04:05:57,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:57,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1392 transitions. [2023-08-04 04:05:57,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 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 04:05:57,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 708.0) internal successors, (3540), 5 states have internal predecessors, (3540), 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 04:05:57,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 708.0) internal successors, (3540), 5 states have internal predecessors, (3540), 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 04:05:57,436 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 240 flow. Second operand 4 states and 1392 transitions. [2023-08-04 04:05:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 86 flow [2023-08-04 04:05:57,436 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 04:05:57,437 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 04:05:57,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=708, 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 04:05:57,438 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -72 predicate places. [2023-08-04 04:05:57,438 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 04:05:57,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.6) internal successors, (1733), 5 states have internal predecessors, (1733), 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 04:05:57,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:05:57,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:05:57,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:05:57,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:05:57,455 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 04:05:57,650 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 04:05:57,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:05:57,653 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:05:57,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:57,849 INFO L124 PetriNetUnfolderBase]: 188/1415 cut-off events. [2023-08-04 04:05:57,849 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:05:57,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-04 04:05:57,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:57,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:57,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:57,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:57,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:57,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-08-04 04:05:58,218 INFO L124 PetriNetUnfolderBase]: 188/1415 cut-off events. [2023-08-04 04:05:58,219 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:05:58,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-04 04:05:58,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 68634 [2023-08-04 04:06:15,088 INFO L134 LiptonReduction]: Checked pairs total: 124959 [2023-08-04 04:06:15,088 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-08-04 04:06:15,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:06:15,090 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;@32b542a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:06:15,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:06:15,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:06:15,094 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-08-04 04:06:15,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:06:15,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:15,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:06:15,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 04:06:15,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1632615932, now seen corresponding path program 1 times [2023-08-04 04:06:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416028659] [2023-08-04 04:06:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:06:15,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:06:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:06:15,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:06:15,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:06:15,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 04:06:15,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 04:06:15,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 04:06:15,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:06:15,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:06:15,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 04:06:15,203 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:06:15,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:06:15,290 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 04:06:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-08-04 04:06:16,724 INFO L124 PetriNetUnfolderBase]: 1211/6644 cut-off events. [2023-08-04 04:06:16,725 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 04:06:16,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60755 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-08-04 04:06:16,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 608 transitions, 1306 flow [2023-08-04 04:06:16,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 607 transitions, 1300 flow [2023-08-04 04:06:16,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:06:16,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 533 places, 607 transitions, 1300 flow [2023-08-04 04:06:16,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 533 places, 607 transitions, 1300 flow [2023-08-04 04:06:16,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 607 transitions, 1300 flow [2023-08-04 04:06:18,322 INFO L124 PetriNetUnfolderBase]: 1211/6643 cut-off events. [2023-08-04 04:06:18,322 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2023-08-04 04:06:18,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 6643 events. 1211/6643 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60733 event pairs, 22 based on Foata normal form. 0/5716 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-08-04 04:06:18,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 227860 [2023-08-04 04:06:35,252 INFO L134 LiptonReduction]: Checked pairs total: 464720 [2023-08-04 04:06:35,252 INFO L136 LiptonReduction]: Total number of compositions: 465 [2023-08-04 04:06:35,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:06:35,255 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;@32b542a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:06:35,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:06:35,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:06:35,266 INFO L124 PetriNetUnfolderBase]: 28/152 cut-off events. [2023-08-04 04:06:35,266 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:06:35,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:35,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:35,266 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 04:06:35,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1866122673, now seen corresponding path program 1 times [2023-08-04 04:06:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318714501] [2023-08-04 04:06:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:35,312 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 04:06:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318714501] [2023-08-04 04:06:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318714501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:06:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:06:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:06:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156855111] [2023-08-04 04:06:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:06:35,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:06:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:06:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:06:35,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1073 [2023-08-04 04:06:35,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 213 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 524.0) internal successors, (1572), 3 states have internal predecessors, (1572), 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 04:06:35,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:35,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1073 [2023-08-04 04:06:35,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand