/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_85-list2_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:32:56,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:32:56,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:32:56,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:32:56,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:32:56,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:32:56,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:32:56,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:32:56,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:32:56,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:32:56,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:32:56,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:32:56,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:32:56,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:32:56,501 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:32:56,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:32:56,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:32:56,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:32:56,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:32:56,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:32:56,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:32:56,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:32:56,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:32:56,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:32:56,504 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:32:56,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:32:56,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:32:56,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:32:56,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:32:56,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:32:56,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:32:56,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:32:56,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:32:56,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:32:56,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:32:56,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:32:56,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:32:56,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:32:56,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:32:56,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:32:56,509 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:32:56,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:32:56,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:32:56,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:32:56,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:32:56,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:32:56,782 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:32:56,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_85-list2_racefree_bound2.i [2023-08-03 15:32:58,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:32:58,240 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:32:58,241 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_85-list2_racefree_bound2.i [2023-08-03 15:32:58,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8de4e431/8c42cd6a48ea4262ae96caab57a7fd7b/FLAGd1901414e [2023-08-03 15:32:58,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8de4e431/8c42cd6a48ea4262ae96caab57a7fd7b [2023-08-03 15:32:58,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:32:58,285 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:32:58,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:32:58,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:32:58,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:32:58,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58693537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58, skipping insertion in model container [2023-08-03 15:32:58,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,358 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:32:58,742 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_85-list2_racefree_bound2.i[47038,47051] [2023-08-03 15:32:58,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:32:58,799 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:32:58,819 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-03 15:32:58,829 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-03 15:32:58,840 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_85-list2_racefree_bound2.i[47038,47051] [2023-08-03 15:32:58,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:32:58,920 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:32:58,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58 WrapperNode [2023-08-03 15:32:58,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:32:58,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:32:58,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:32:58,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:32:58,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,976 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-08-03 15:32:58,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:32:58,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:32:58,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:32:58,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:32:58,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:58,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:32:59,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:32:59,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:32:59,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:32:59,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (1/1) ... [2023-08-03 15:32:59,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:32:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:32:59,065 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) [2023-08-03 15:32:59,067 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 [2023-08-03 15:32:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:32:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 15:32:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-03 15:32:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-03 15:32:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:32:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 15:32:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:32:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 15:32:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-03 15:32:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-03 15:32:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:32:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:32:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:32:59,105 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:32:59,303 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:32:59,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:32:59,770 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:32:59,779 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:32:59,780 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-03 15:32:59,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:32:59 BoogieIcfgContainer [2023-08-03 15:32:59,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:32:59,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:32:59,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:32:59,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:32:59,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:32:58" (1/3) ... [2023-08-03 15:32:59,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdfeba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:32:59, skipping insertion in model container [2023-08-03 15:32:59,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:32:58" (2/3) ... [2023-08-03 15:32:59,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdfeba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:32:59, skipping insertion in model container [2023-08-03 15:32:59,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:32:59" (3/3) ... [2023-08-03 15:32:59,790 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_85-list2_racefree_bound2.i [2023-08-03 15:32:59,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:32:59,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:32:59,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:32:59,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:32:59,928 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 15:32:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,236 INFO L124 PetriNetUnfolderBase]: 164/1071 cut-off events. [2023-08-03 15:33:00,237 INFO L125 PetriNetUnfolderBase]: For 36/61 co-relation queries the response was YES. [2023-08-03 15:33:00,262 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. [2023-08-03 15:33:00,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:33:00,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-03 15:33:00,474 INFO L124 PetriNetUnfolderBase]: 164/1071 cut-off events. [2023-08-03 15:33:00,474 INFO L125 PetriNetUnfolderBase]: For 36/61 co-relation queries the response was YES. [2023-08-03 15:33:00,489 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. [2023-08-03 15:33:00,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-08-03 15:33:14,149 INFO L134 LiptonReduction]: Checked pairs total: 98696 [2023-08-03 15:33:14,150 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-03 15:33:14,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:33:14,165 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;@5816d02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:33:14,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 15:33:14,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:33:14,170 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-03 15:33:14,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:33:14,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:33:14,171 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:33:14,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:33:14,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:33:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2134265376, now seen corresponding path program 1 times [2023-08-03 15:33:14,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:33:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76651266] [2023-08-03 15:33:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:33:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:33:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:33:14,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:33:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:33:14,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:33:14,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:33:14,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 15:33:14,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 15:33:14,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 15:33:14,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 15:33:14,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 15:33:14,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 15:33:14,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 15:33:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:33:14,398 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:33:14,400 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:33:14,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:33:14,493 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 15:33:14,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:16,132 INFO L124 PetriNetUnfolderBase]: 1130/5483 cut-off events. [2023-08-03 15:33:16,132 INFO L125 PetriNetUnfolderBase]: For 602/702 co-relation queries the response was YES. [2023-08-03 15:33:16,243 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 50281 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. [2023-08-03 15:33:16,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:16,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:16,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:33:16,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:16,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:16,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-08-03 15:33:17,837 INFO L124 PetriNetUnfolderBase]: 1130/5483 cut-off events. [2023-08-03 15:33:17,838 INFO L125 PetriNetUnfolderBase]: For 602/702 co-relation queries the response was YES. [2023-08-03 15:33:17,947 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 50281 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. [2023-08-03 15:33:18,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 193052 [2023-08-03 15:33:33,507 INFO L134 LiptonReduction]: Checked pairs total: 408315 [2023-08-03 15:33:33,507 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-08-03 15:33:33,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:33:33,510 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;@5816d02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:33:33,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-03 15:33:33,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:33:33,521 INFO L124 PetriNetUnfolderBase]: 16/121 cut-off events. [2023-08-03 15:33:33,521 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-03 15:33:33,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:33:33,521 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:33:33,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:33:33,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:33:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 113769498, now seen corresponding path program 1 times [2023-08-03 15:33:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:33:33,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813501553] [2023-08-03 15:33:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:33:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:33:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:33:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:33:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:33:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813501553] [2023-08-03 15:33:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813501553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:33:33,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63709222] [2023-08-03 15:33:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:33:33,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:33:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:33:33,735 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) [2023-08-03 15:33:33,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:33:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:33:33,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:33:33,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:33:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:33:33,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:33:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63709222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:33:33,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:33:33,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:33:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532367393] [2023-08-03 15:33:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:33:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:33:33,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:33:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:33:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:33:34,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 992 [2023-08-03 15:33:34,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 204 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 479.6) internal successors, (2398), 5 states have internal predecessors, (2398), 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) [2023-08-03 15:33:34,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:33:34,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 992 [2023-08-03 15:33:34,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand