/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/increased_bounds/weaver_popl20-mult-4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:47:11,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:47:11,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:47:11,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:47:11,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:47:11,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:47:11,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:47:11,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:47:11,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:47:11,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:47:11,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:47:11,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:47:11,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:47:11,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:47:11,107 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:47:11,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:47:11,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:47:11,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:47:11,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:47:11,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:47:11,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:47:11,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:47:11,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:47:11,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:47:11,109 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:47:11,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:47:11,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:47:11,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:47:11,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:47:11,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:47:11,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:47:11,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:47:11,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:47:11,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:47:11,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:47:11,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:47:11,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:47:11,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:47:11,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:47:11,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:47:11,112 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:47:11,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:47:11,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:47:11,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:47:11,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:47:11,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:47:11,260 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:47:11,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-mult-4.wvr_bound2.c [2023-08-03 20:47:12,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:47:12,331 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:47:12,331 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-mult-4.wvr_bound2.c [2023-08-03 20:47:12,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96415680d/bfebe95f91da4ccdbf91bb9a5f462907/FLAGfeba9ea33 [2023-08-03 20:47:12,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96415680d/bfebe95f91da4ccdbf91bb9a5f462907 [2023-08-03 20:47:12,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:47:12,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:47:12,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:47:12,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:47:12,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:47:12,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296e4a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12, skipping insertion in model container [2023-08-03 20:47:12,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,375 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:47:12,485 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-mult-4.wvr_bound2.c[2936,2949] [2023-08-03 20:47:12,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:47:12,491 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:47:12,508 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-mult-4.wvr_bound2.c[2936,2949] [2023-08-03 20:47:12,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:47:12,513 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:47:12,514 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:47:12,518 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:47:12,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12 WrapperNode [2023-08-03 20:47:12,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:47:12,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:47:12,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:47:12,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:47:12,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,542 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 183 [2023-08-03 20:47:12,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:47:12,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:47:12,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:47:12,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:47:12,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:47:12,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:47:12,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:47:12,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:47:12,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (1/1) ... [2023-08-03 20:47:12,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:47:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:47:12,585 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 20:47:12,599 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 20:47:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:47:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:47:12,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:47:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:47:12,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:47:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:47:12,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:47:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 20:47:12,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:47:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:47:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:47:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:47:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:47:12,618 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 20:47:12,705 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:47:12,706 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:47:12,942 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:47:12,988 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:47:12,988 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 20:47:12,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:47:12 BoogieIcfgContainer [2023-08-03 20:47:12,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:47:12,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:47:12,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:47:12,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:47:12,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:47:12" (1/3) ... [2023-08-03 20:47:12,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ba6d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:47:12, skipping insertion in model container [2023-08-03 20:47:12,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:47:12" (2/3) ... [2023-08-03 20:47:12,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ba6d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:47:12, skipping insertion in model container [2023-08-03 20:47:12,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:47:12" (3/3) ... [2023-08-03 20:47:13,000 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-mult-4.wvr_bound2.c [2023-08-03 20:47:13,005 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:47:13,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:47:13,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:47:13,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:47:13,080 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 20:47:13,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,336 INFO L124 PetriNetUnfolderBase]: 269/1486 cut-off events. [2023-08-03 20:47:13,336 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 20:47:13,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1664 conditions, 1486 events. 269/1486 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10189 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 815. Up to 33 conditions per place. [2023-08-03 20:47:13,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:47:13,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,380 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 196 transitions, 460 flow [2023-08-03 20:47:13,508 INFO L124 PetriNetUnfolderBase]: 269/1486 cut-off events. [2023-08-03 20:47:13,508 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 20:47:13,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1664 conditions, 1486 events. 269/1486 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10189 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 815. Up to 33 conditions per place. [2023-08-03 20:47:13,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 9280 [2023-08-03 20:47:16,346 INFO L134 LiptonReduction]: Checked pairs total: 16937 [2023-08-03 20:47:16,347 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-03 20:47:16,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:47:16,360 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;@230189e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:47:16,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 20:47:16,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:47:16,363 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2023-08-03 20:47:16,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:47:16,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:47:16,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:47:16,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 20:47:16,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:47:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash 694893775, now seen corresponding path program 1 times [2023-08-03 20:47:16,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:47:16,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177007590] [2023-08-03 20:47:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:47:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:47:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:47:16,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:47:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:47:16,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:47:16,471 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:47:16,472 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 20:47:16,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 20:47:16,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 20:47:16,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 20:47:16,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 20:47:16,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:47:16,480 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:47:16,484 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:47:16,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:47:16,516 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 20:47:16,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:18,547 INFO L124 PetriNetUnfolderBase]: 5482/20349 cut-off events. [2023-08-03 20:47:18,547 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 20:47:18,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24734 conditions, 20349 events. 5482/20349 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 216359 event pairs, 81 based on Foata normal form. 0/17388 useless extension candidates. Maximal degree in co-relation 12267. Up to 1024 conditions per place. [2023-08-03 20:47:18,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:18,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:18,746 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:47:18,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:18,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:18,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 256 transitions, 656 flow [2023-08-03 20:47:20,414 INFO L124 PetriNetUnfolderBase]: 5482/20349 cut-off events. [2023-08-03 20:47:20,415 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 20:47:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24734 conditions, 20349 events. 5482/20349 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 216359 event pairs, 81 based on Foata normal form. 0/17388 useless extension candidates. Maximal degree in co-relation 12267. Up to 1024 conditions per place. [2023-08-03 20:47:20,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 24640 [2023-08-03 20:47:24,145 INFO L134 LiptonReduction]: Checked pairs total: 54441 [2023-08-03 20:47:24,146 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-03 20:47:24,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:47:24,148 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;@230189e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:47:24,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 20:47:24,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:47:24,151 INFO L124 PetriNetUnfolderBase]: 5/59 cut-off events. [2023-08-03 20:47:24,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 20:47:24,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:47:24,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:47:24,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 20:47:24,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:47:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash -554709470, now seen corresponding path program 1 times [2023-08-03 20:47:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:47:24,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132161646] [2023-08-03 20:47:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:47:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:47:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:47:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:47:24,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:47:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132161646] [2023-08-03 20:47:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132161646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:47:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:47:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:47:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305710282] [2023-08-03 20:47:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:47:24,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:47:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:47:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:47:24,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:47:24,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 433 [2023-08-03 20:47:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 20:47:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:47:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 433 [2023-08-03 20:47:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand